Vendor review · paramountpeptides.com

Paramount Peptides reviews

Q: Is Paramount Peptides legit?

The reviewed evidence receives grade B under our published rubric. Independent labs have tested 65 of its vials across 8 peptides; 65 were the right peptide and 45 passed our basic check. Failed: Tirzepatide 20 mg (batch 01/2026) (failed: purity was 99.08%, below 99.5%); BPC-157 5 mg (failed: purity was 98.573%, below 99.5%); CJC-1295 10 mg (batch HDAC-0002) (failed: purity was 99.144%, below 99.5%); CJC-1295 10 mg (batch HDAC-0002) (failed: purity was 99.126%, below 99.5%); Survodutide 6 mg (batch SUR6N12192024) (failed: purity was 98.577%, below 99.5%); Survodutide 6 mg (batch SUR6N12192024) (failed: purity was 98.615%, below 99.5%); BPC-157 10 mg (batch BPC10N020725) (failed: purity was 98.94%, below 99.5%); PT-141 10 mg (batch PT-141-0003) (failed: purity was 98.85%, below 99.5%); CJC-1295 10 mg (batch NDAC10N110624) (failed: purity was 98.54%, below 99.5%); Ipamorelin 10 mg (batch HIPA-0003) (failed: purity was 99.488%, below 99.5%); BPC-157 10 mg (batch BPC10N12122024) (failed: purity was 98.075%, below 99.5%); Retatrutide 12 mg (batch RET12N11142004) (failed: purity was 99.488%, below 99.5%); CJC-1295 10 mg (batch NDAC10N110624) (failed: purity was 97.951%, below 99.5%); Tirzepatide 10 mg (batch TIR10n01162025) (failed: purity was 99.319%, below 99.5%); Tirzepatide 10 mg (failed: purity was 99.08%, below 99.5%); BPC-157 10 mg (failed: the dose was +43.2% from the label, beyond the 35% limit); CJC-1295 10 mg (failed: purity was 90.07%, below 99.5%); Tirzepatide 10 mg (failed: purity was 98.912%, below 99.5%); BPC-157 10 mg (failed: purity was 99.233%, below 99.5%; the dose was +39.5% from the label, beyond the 35% limit); CJC-1295 10 mg (failed: purity was 99.102%, below 99.5%). We grade lab evidence and published facts; grades are not endorsements and do not determine whether a business acts lawfully.

Q: What do Paramount Peptides' lab results show?

65 vials tested between Jan 14, 2025 and Feb 2, 2026: Retatrutide (12), BPC-157 (11), Tirzepatide (11), CJC-1295 (9), Semaglutide (9), Ipamorelin (7), PT-141 (3) and Survodutide (3). 65 of 65 were the right peptide, purity was measured on 65, and 10 of 65 were within 5% of the labelled dose. 20 failed our basic check (right peptide, at least 99.5% pure, within 35% of the labelled dose).

Q: Who sent Paramount Peptides' vials for testing?

bought by the independent tester (58) and sent in anonymously (7). TrustPointe (22), Chromate (16), MZ Biolabs (11), Freedom Diagnostics (8), Krause Analytical (6) and Janoshik (2) ran the tests. 58 were bought by the tester like a normal customer.

Q: Does Paramount Peptides have a discount code?

We haven't verified a discount code for Paramount Peptides. We only list codes we have seen on the shop's site or confirmed at checkout.

Paramount Peptides review: our rating is B (85/100), from 65 independently tested vials across 8 peptides; all 65 were the labelled peptide and 45 met our pass mark. Newest test: Feb 2, 2026. Peptide Vendor Reviews publishes each of these 65 results with its certificate.

Grades describe the samples tested; some links earn us a commission, but never change a vendor's grade. How we grade

Compiled from independent lab data · not yet reviewed by our editorsUpdated Feb 2, 2026

Evidence assessment

Grade B

Our rating · 85/100

In the reviewed independent records, all 65 vials were the right peptide, and 21 of 65 were within 10% of the labelled dose. These results describe the tested samples, not all products or future batches.

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See results by product How we grade

Test results

What was actually in the vials?

Good · 82/100

Mostly good results, with some measurements off target.

All 65 vials were the right peptide.
21 of 65 held within 10% of the labelled dose.
Purity 90.07–99.99% (some low).
20 of 65 failed our basic check: purity under 99.5% (19), dose more than 35% off the label (2).

Paramount Peptides lab test results by peptide

Each product gets its own grade from the available lab records under the same published rubric. Alternative vendors are shown alongside with their compound-level grades. A grade describes the tested samples only.

Paramount Peptides' product assessmentsHigher-rated vendors

Retatrutide
Strong assessment
last tested Dec 6, 2025
$20.83/mg · Estimated price · as of May 6, 2025
$20.83/mg
Estimated price · as of May 6, 2025
B
Vials tested
12
Right peptide
All
Purity
99.488–99.95%
Labelled quantity
6 of 12 within 10%
Visit shop See each vialFurthest off: +27% (batch RET12N021125)
Higher-rated vendor
A
Peptide Partners
32 Retatrutide vials tested · last Oct 14, 2026
$4.79/mg · 77% cheaper than Paramount Peptides
Estimated price · as of Sep 6, 2026
Visit shop Read review
BPC-157
Mixed assessment
Listed on the shop's site · last tested Oct 3, 2025
$4.80/mg · cheapest: 20 mg vial
$4.80/mg
cheapest: 20 mg vial
C
Vials tested
11
Right peptide
All
Purity
98.075–99.99%
Labelled quantity
5 of 11 within 10%
Visit shop See each vialFurthest off: +43.2%
Higher-rated vendor
B
HK Peptides
22 BPC-157 vials tested · last Sep 9, 2026
$0.82/mg · 83% cheaper than Paramount Peptides
Estimated price · as of Aug 14, 2026
Visit shop Read review
Tirzepatide
Strong assessment
Not currently listed · last tested Feb 2, 2026
No current price
No current price
B
Vials tested
11
Right peptide
All
Purity
98.912–99.97%
Labelled quantity
4 of 11 within 10%
Visit shop See each vialFurthest off: +32.8% (batch TIR10N022125)
Higher-rated vendor
A
Guangzhou Jeep Biotechnology JEEP
16 Tirzepatide vials tested · last Aug 4, 2026
$0.42/mg
Estimated price · as of Aug 22, 2026
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CJC-1295
Mixed assessment
Listed on the shop's site · last tested May 20, 2025
$6.54/mg · cheapest: 10 mg vial
$6.54/mg
cheapest: 10 mg vial
C
Vials tested
9
Right peptide
All
Purity
90.07–99.804%
Labelled quantity
0 of 9 within 10%
Visit shop See each vialFurthest off: +30.3%
Higher-rated vendor
B
Qing Li Peptide
19 CJC-1295 vials tested · last Aug 12, 2026
$1.40/mg · 79% cheaper than Paramount Peptides
Estimated price · as of Jul 21, 2026
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Semaglutide
Mixed assessment
last tested May 6, 2025
$22.50/mg · Estimated price · as of May 6, 2025
$22.50/mg
Estimated price · as of May 6, 2025
C
Vials tested
9
Right peptide
All
Purity
99.76–99.988%
Labelled quantity
0 of 9 within 10%
Visit shop See each vialFurthest off: +34.3%
Higher-rated vendor
B
Royal Peptides
8 Semaglutide vials tested · last Jul 23, 2026
$2.00/mg · 91% cheaper than Paramount Peptides
cheapest: 10 × 30 mg pack
Visit shop Read review
Ipamorelin
Strong assessment
Listed on the shop's site · last tested May 5, 2025
$6.80/mg · cheapest: 10 mg vial
$6.80/mg
cheapest: 10 mg vial
B
Vials tested
7
Right peptide
All
Purity
99.488–99.727%
Labelled quantity
4 of 7 within 10%
Visit shop See each vialFurthest off: -15.6% (batch HIPA-0003)
Higher-rated vendor
A
Reta-Peptide
16 Ipamorelin vials tested · last Jul 20, 2026
$0.75/mg · 89% cheaper than Paramount Peptides
cheapest: 10 × 10 mg pack
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PT-141
Mixed assessment
Listed on the shop's site · last tested May 7, 2025
$5.95/mg · cheapest: 10 mg vial
$5.95/mg
cheapest: 10 mg vial
C
Vials tested
3
Right peptide
All
Purity
98.85–99.902%
Labelled quantity
2 of 3 within 10%
Visit shop See each vialFurthest off: +33% (batch PT-141-0003)
Higher-rated vendor
B
Qing Li Peptide
7 PT-141 vials tested · last Sep 4, 2026
Visit shop Read review
Survodutide
Mixed assessment
Listed on the shop's site · last tested May 6, 2025
$37.50/mg · cheapest: 6 mg vial
$37.50/mg
cheapest: 6 mg vial
C
Vials tested
3
Right peptide
All
Purity
98.577–99.56%
Labelled quantity
0 of 3 within 10%
Visit shop See each vialFurthest off: +31.67% (batch SUR6N12192024)
No other Survodutide vendor met our quality score, sample-count, and recent-testing requirements.
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AOD-9604
Never tested
Listed on the shop's site
$12.04/mg · cheapest: 6 mg vial
$12.04/mg
cheapest: 6 mg vial
N/A
No lab has tested this shop's AOD-9604, so we can't say what's in the vial.
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No other AOD-9604 vendor met our quality score, sample-count, and recent-testing requirements.
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Cagrilintide
Never tested
Listed on the shop's site
$15.72/mg · cheapest: 10 mg vial
$15.72/mg
cheapest: 10 mg vial
N/A
No lab has tested this shop's Cagrilintide, so we can't say what's in the vial.
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Graded vendor
B
Wuhan Wansheng Biotechnology
14 Cagrilintide vials tested · last May 6, 2026
$2.20/mg · 86% cheaper than Paramount Peptides
Estimated price · as of Mar 3, 2026
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Cardiogen
Never tested
Listed on the shop's site
$4.00/mg · cheapest: 20 mg vial
$4.00/mg
cheapest: 20 mg vial
N/A
No lab has tested this shop's Cardiogen, so we can't say what's in the vial.
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No other Cardiogen vendor met our quality score, sample-count, and recent-testing requirements.
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Cartalax
Never tested
Listed on the shop's site
$2.21/mg · cheapest: 25 mg vial
$2.21/mg
cheapest: 25 mg vial
N/A
No lab has tested this shop's Cartalax, so we can't say what's in the vial.
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No other Cartalax vendor met our quality score, sample-count, and recent-testing requirements.
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DSIP
Never tested
Listed on the shop's site
$6.54/mg · cheapest: 10 mg vial
$6.54/mg
cheapest: 10 mg vial
N/A
No lab has tested this shop's DSIP, so we can't say what's in the vial.
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Graded vendor
B
HkRoids
3 DSIP vials tested · last Jul 20, 2026
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Epithalon
Never tested
Listed on the shop's site
$1.70/mg · cheapest: 50 mg vial
$1.70/mg
cheapest: 50 mg vial
N/A
No lab has tested this shop's Epithalon, so we can't say what's in the vial.
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No other Epithalon vendor met our quality score, sample-count, and recent-testing requirements.
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Follistatin 344
Never tested
Listed on the shop's site
$182.75/mg · cheapest: 1 mg vial
$182.75/mg
cheapest: 1 mg vial
N/A
No lab has tested this shop's Follistatin 344, so we can't say what's in the vial.
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No other Follistatin 344 vendor met our quality score, sample-count, and recent-testing requirements.
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FOXO4-DRI
Never tested
Listed on the shop's site
$17.00/mg · cheapest: 15 mg vial
$17.00/mg
cheapest: 15 mg vial
N/A
No lab has tested this shop's FOXO4-DRI, so we can't say what's in the vial.
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No other FOXO4-DRI vendor met our quality score, sample-count, and recent-testing requirements.
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GHK-Cu
Never tested
Listed on the shop's site
$0.75/mg · cheapest: 100 mg vial
$0.75/mg
cheapest: 100 mg vial
N/A
No lab has tested this shop's GHK-Cu, so we can't say what's in the vial.
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Graded vendor
A
Reta-Peptide
28 GHK-Cu vials tested · last Sep 15, 2026
$0.06/mg · 92% cheaper than Paramount Peptides
Estimated price · as of Jul 1, 2026
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Hexarelin
Never tested
Listed on the shop's site
$13.60/mg · cheapest: 5 mg vial
$13.60/mg
cheapest: 5 mg vial
N/A
No lab has tested this shop's Hexarelin, so we can't say what's in the vial.
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No other Hexarelin vendor met our quality score, sample-count, and recent-testing requirements.
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IGF-1 LR3
Never tested
Listed on the shop's site
$85.00/mg · cheapest: 1 mg vial
$85.00/mg
cheapest: 1 mg vial
N/A
No lab has tested this shop's IGF-1 LR3, so we can't say what's in the vial.
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No other IGF-1 LR3 vendor met our quality score, sample-count, and recent-testing requirements.
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Kisspeptin
Never tested
Listed on the shop's site
$8.41/mg · cheapest: 10 mg vial
$8.41/mg
cheapest: 10 mg vial
N/A
No lab has tested this shop's Kisspeptin, so we can't say what's in the vial.
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No other Kisspeptin vendor met our quality score, sample-count, and recent-testing requirements.
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KLOW
Never tested
Listed on the shop's site
$1.86/mg · cheapest: 80 mg vial
$1.86/mg
cheapest: 80 mg vial
N/A
No lab has tested this shop's KLOW, so we can't say what's in the vial.
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Graded vendor
B
Heman Peptide HM
3 KLOW vials tested · last Sep 21, 2026
$0.29/mg · 85% cheaper than Paramount Peptides
Estimated price · as of Sep 16, 2026
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KPV
Never tested
Listed on the shop's site
$6.29/mg · cheapest: 10 mg vial
$6.29/mg
cheapest: 10 mg vial
N/A
No lab has tested this shop's KPV, so we can't say what's in the vial.
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Graded vendor
B
Homopeptide
3 KPV vials tested · last Sep 4, 2026
$0.56/mg · 91% cheaper than Paramount Peptides
Estimated price · as of Jul 13, 2026
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LL-37
Never tested
Listed on the shop's site
$8.50/mg · cheapest: 10 mg vial
$8.50/mg
cheapest: 10 mg vial
N/A
No lab has tested this shop's LL-37, so we can't say what's in the vial.
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No other LL-37 vendor met our quality score, sample-count, and recent-testing requirements.
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Melanotan II
Never tested
Listed on the shop's site
$4.25/mg · cheapest: 10 mg vial
$4.25/mg
cheapest: 10 mg vial
N/A
No lab has tested this shop's Melanotan II, so we can't say what's in the vial.
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Graded vendor
B
HK Peptides
12 Melanotan II vials tested · last Jul 9, 2026
$0.41/mg · 90% cheaper than Paramount Peptides
Estimated price · as of Feb 1, 2026
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MGF
Never tested
Listed on the shop's site
$25.50/mg · cheapest: 5 mg vial
$25.50/mg
cheapest: 5 mg vial
N/A
No lab has tested this shop's MGF, so we can't say what's in the vial.
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No other MGF vendor met our quality score, sample-count, and recent-testing requirements.
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MOTS-c
Never tested
Listed on the shop's site
$2.76/mg · cheapest: 50 mg vial
$2.76/mg
cheapest: 50 mg vial
N/A
No lab has tested this shop's MOTS-c, so we can't say what's in the vial.
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Graded vendor
B
Reta-Peptide
9 MOTS-c vials tested · last Oct 12, 2026
$0.65/mg · 76% cheaper than Paramount Peptides
cheapest: 10 × 10 mg pack
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NAD+
Never tested
Listed on the shop's site
$0.17/mg · cheapest: 1000 mg vial
$0.17/mg
cheapest: 1000 mg vial
N/A
No lab has tested this shop's NAD+, so we can't say what's in the vial.
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No other NAD+ vendor met our quality score, sample-count, and recent-testing requirements.
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Oxytocin
Never tested
Listed on the shop's site
$5.53/mg · cheapest: 10 mg vial
$5.53/mg
cheapest: 10 mg vial
N/A
No lab has tested this shop's Oxytocin, so we can't say what's in the vial.
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No other Oxytocin vendor met our quality score, sample-count, and recent-testing requirements.
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P-21
Never tested
Listed on the shop's site
$12.75/mg · cheapest: 10 mg vial
$12.75/mg
cheapest: 10 mg vial
N/A
No lab has tested this shop's P-21, so we can't say what's in the vial.
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No other P-21 vendor met our quality score, sample-count, and recent-testing requirements.
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PE 22-28
Never tested
Listed on the shop's site
$5.53/mg · cheapest: 10 mg vial
$5.53/mg
cheapest: 10 mg vial
N/A
No lab has tested this shop's PE 22-28, so we can't say what's in the vial.
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No other PE 22-28 vendor met our quality score, sample-count, and recent-testing requirements.
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PEG-MGF
Never tested
Listed on the shop's site
$23.80/mg · cheapest: 5 mg vial
$23.80/mg
cheapest: 5 mg vial
N/A
No lab has tested this shop's PEG-MGF, so we can't say what's in the vial.
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No other PEG-MGF vendor met our quality score, sample-count, and recent-testing requirements.
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Selank
Never tested
Listed on the shop's site
$6.80/mg · cheapest: 10 mg vial
$6.80/mg
cheapest: 10 mg vial
N/A
No lab has tested this shop's Selank, so we can't say what's in the vial.
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No other Selank vendor met our quality score, sample-count, and recent-testing requirements.
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Semax
Never tested
Listed on the shop's site
$2.27/mg · cheapest: 30 mg vial
$2.27/mg
cheapest: 30 mg vial
N/A
No lab has tested this shop's Semax, so we can't say what's in the vial.
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No other Semax vendor met our quality score, sample-count, and recent-testing requirements.
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Sermorelin
Never tested
Listed on the shop's site
$6.80/mg · cheapest: 10 mg vial
$6.80/mg
cheapest: 10 mg vial
N/A
No lab has tested this shop's Sermorelin, so we can't say what's in the vial.
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No other Sermorelin vendor met our quality score, sample-count, and recent-testing requirements.
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TB-500
Never tested
Listed on the shop's site
$6.25/mg · cheapest: 20 mg vial
$6.25/mg
cheapest: 20 mg vial
N/A
No lab has tested this shop's TB-500, so we can't say what's in the vial.
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Graded vendor
B
Peptide Partners
11 TB-500 vials tested · last Aug 5, 2026
$4.90/mg · 22% cheaper than Paramount Peptides
cheapest: 10 × 10 mg pack
Visit shop Read review
Tesamorelin
Never tested
Listed on the shop's site
$6.46/mg · cheapest: 10 mg vial
$6.46/mg
cheapest: 10 mg vial
N/A
No lab has tested this shop's Tesamorelin, so we can't say what's in the vial.
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Graded vendor
B
Shanghai ERP peptide Biotechnology
13 Tesamorelin vials tested · last Oct 12, 2026
$1.45/mg · 78% cheaper than Paramount Peptides
cheapest: 10 × 20 mg pack
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Thymalin
Never tested
Listed on the shop's site
$4.04/mg · cheapest: 20 mg vial
$4.04/mg
cheapest: 20 mg vial
N/A
No lab has tested this shop's Thymalin, so we can't say what's in the vial.
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No other Thymalin vendor met our quality score, sample-count, and recent-testing requirements.
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Thymosin Alpha-1
Never tested
Listed on the shop's site
$9.78/mg · cheapest: 10 mg vial
$9.78/mg
cheapest: 10 mg vial
N/A
No lab has tested this shop's Thymosin Alpha-1, so we can't say what's in the vial.
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No other Thymosin Alpha-1 vendor met our quality score, sample-count, and recent-testing requirements.
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Vendors shown must meet our published grading criteria for that peptide and follow the shared quality ranking. Partner status never changes the order. We earn a commission on purchases through partner links. Shops can't pay for a grade, and inclusion is not an endorsement.

Quick facts

Paramount Peptides reviews: key findings

From 65 vials tested by independent labs. These results describe the tested vials, not every vial the shop sells. Tap i for test definitions and thresholds.

What was in the vials

Right peptide?

65 of 65 vials

Every vial was the peptide on the label

Amount matches label?

21 of 65 vials

Within 10% of the labelled amount

Peptide purity

90.07–99.99%

Purity across 65 tested vials

Failed our quality check

20 of 65 vials

Purity below 99.5%; Amount more than 35% off label

Testing coverage and limitations

Vials tested for contaminants

None

No contamination checks reported

Vials with a batch number

46 of 65 vials

Tested vials linked to a production run

Bought anonymously?

58 of 65 vials

Confirmed anonymous purchases

Most recent lab test

Feb 2026

9 months ago; getting old

Test results

What the lab found

65 vials tested by 6 labs, Jan 14, 2025 to Feb 2, 2026. Mostly good results, with some measurements off target.

How close each vial was to the dose on its label

0% means exactly the amount on the label. Green band: within 10%, which is good. Dashed lines: 35% over or under, where a vial fails our basic check.

Tirzepatide 20 mgFeb 2, 2026 · Batch 01/2026+10.5%Failed
Retatrutide 10 mgDec 6, 2025+4%
Retatrutide 20 mgDec 6, 2025+2.5%
Retatrutide 5 mgDec 6, 2025+1.4%
BPC-157 5 mgOct 3, 2025-1.6%
Tirzepatide 5 mgJul 16, 2025+9.4%
BPC-157 5 mgJul 10, 2025+3.4%Failed
CJC-1295 10 mgMay 20, 2025 · Batch HDAC-0002+25.5%Failed
CJC-1295 10 mgMay 20, 2025 · Batch HDAC-0002+26%Failed
Tirzepatide 10 mgMay 7, 2025 · Batch TIR10N022125+7.6%
Tirzepatide 10 mgMay 7, 2025 · Batch TIR10N022125+8.2%
PT-141 10 mgMay 7, 2025 · Batch PT-141-0003+5.5%
PT-141 10 mgMay 7, 2025 · Batch PT-141-0003+6.6%
Retatrutide 12 mgMay 6, 2025 · Batch RET12N021125+24.08%
Retatrutide 12 mgMay 6, 2025 · Batch RET12N021125+24.08%
Semaglutide 10 mgMay 6, 2025+25.4%
Semaglutide 10 mgMay 6, 2025+21.5%
Survodutide 6 mgMay 6, 2025 · Batch SUR6N12192024+16.83%Failed
Survodutide 6 mgMay 6, 2025 · Batch SUR6N12192024+20.17%Failed
BPC-157 10 mgMay 5, 2025 · Batch BPC10N020725+11.7%
BPC-157 10 mgMay 5, 2025 · Batch BPC10N020725+7.5%
Ipamorelin 10 mgMay 5, 2025 · Batch IPA10N11182024-8.2%
Ipamorelin 10 mgMay 5, 2025 · Batch IPA10N11182024-7.8%
Tirzepatide 10 mgApr 25, 2025 · Batch TIR10N022125+32.8%
Retatrutide 12 mgApr 25, 2025 · Batch RET12N021125+27%
BPC-157 10 mgApr 25, 2025 · Batch BPC10N020725+5.9%Failed
CJC-1295 10 mgApr 25, 2025 · Batch HDAC-0002+21.4%
PT-141 10 mgApr 25, 2025 · Batch PT-141-0003+33%Failed
Semaglutide 10 mgApr 25, 2025+34.3%
Survodutide 6 mgApr 25, 2025 · Batch SUR6N12192024+31.67%
Ipamorelin 10 mgApr 25, 2025 · Batch IPA10N11182024-3.1%
Tirzepatide 10 mgMar 20, 2025 · Batch TIR10n01162025+17%
Retatrutide 12 mgMar 20, 2025 · Batch RET12N11142004-1.17%
BPC-157 10 mgMar 20, 2025 · Batch BPC10N12122024+32.3%
CJC-1295 10 mgMar 20, 2025 · Batch NDAC10N110624+26.8%Failed
Semaglutide 10 mgMar 20, 2025 · Batch SEMA102024+13.6%
Ipamorelin 10 mgMar 20, 2025 · Batch HIPA-0003+12%
Ipamorelin 10 mgMar 5, 2025 · Batch HIPA-0003-15.6%Failed
Ipamorelin 10 mgMar 5, 2025 · Batch HIPA-0003-11.2%
BPC-157 10 mgMar 3, 2025 · Batch BPC10N12122024+6.5%Failed
BPC-157 10 mgMar 2, 2025 · Batch BPC10N12122024+18.5%
BPC-157 10 mgMar 2, 2025 · Batch BPC10N12122024+13.7%
Tirzepatide 10 mgFeb 28, 2025 · Batch TIR10n01162025+11.4%
Tirzepatide 10 mgFeb 28, 2025 · Batch TIR10n01162025+12%
Retatrutide 12 mgFeb 28, 2025 · Batch RET12N11142004-4.5%
Retatrutide 12 mgFeb 28, 2025 · Batch RET12N11142004-4.58%Failed
CJC-1295 10 mgFeb 28, 2025 · Batch NDAC10N110624+19.8%
CJC-1295 10 mgFeb 28, 2025 · Batch NDAC10N110624+19.7%
CJC-1295 10 mgFeb 28, 2025 · Batch NDAC10N110624+15.6%Failed
Semaglutide 10 mgFeb 28, 2025 · Batch SEMA102024+22.2%
Semaglutide 10 mgFeb 28, 2025 · Batch SEMA102024+21.9%
Tirzepatide 10 mgFeb 27, 2025 · Batch TIR10n01162025+17.1%Failed
Retatrutide 12 mgFeb 27, 2025 · Batch RET12N11142004-10.5%
Semaglutide 10 mgFeb 27, 2025 · Batch SEMA102024+14.1%
Ipamorelin 10 mgFeb 27, 2025 · Batch HIPA-0003-1.3%
Tirzepatide 10 mgJan 23, 2025+16.8%Failed
Retatrutide 12 mgJan 23, 2025+26.67%
BPC-157 10 mgJan 23, 2025+43.2%Failed
CJC-1295 10 mgJan 23, 2025+17.4%Failed
Semaglutide 10 mgJan 23, 2025+19.2%
Tirzepatide 10 mgJan 14, 2025+9.5%Failed
Retatrutide 12 mgJan 14, 2025+11.75%
BPC-157 10 mgJan 14, 2025+39.5%Failed
CJC-1295 10 mgJan 14, 2025+30.3%Failed
Semaglutide 10 mgJan 14, 2025+20.5%

What looks good

65/65
Right peptide every time
Every one of the 65 vials tested was the peptide on the label, across 6 different labs.
65 vials
58/65
Bought by the tester
58 vials were bought by the independent tester, like any customer would.
58 vials

What to watch

90.07%
Low purity
2 vials measured under 98% purity.
2 vials
- CJC-1295 10 mg · Feb 28, 2025 · Batch NDAC10N110624
- CJC-1295 10 mg · Jan 23, 2025
+43.2%
Doses off the label
44 of 65 vials were more than 10% off the labelled dose, including BPC-157 10 mg at +43.2% and BPC-157 10 mg at +39.5%.
44 vials
30
Products never tested
30 products on sale have never been independently tested, including AOD-9604, Cagrilintide, Cardiogen.

Paramount Peptides website

Recorded sample grade: B. Reta-Peptide has sample grade A.

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Strength of evidence

What supports these results?

A lab result only describes the vial that was tested. This grade shows how well the tested vials represent what you would actually receive.

Strong evidence

None checked for contamination. The evidence meets our A-band thresholds for sample count, recency and sourcing.

What we looked atWhat we foundRating

How many vials were tested65 vials. We like to see 10 or more.Good
Who bought them58 of 65 bought by the tester like a normal customer; 7 of 65 sent in anonymously by buyers.Good
Batch numbers46 of 65 vials.Fair
How recentLatest test 282 days before our check.Fair
Lab reports65 of 65 link to the lab report; none confirmed with the lab yet.Good
Checked for contamination0 of 65 vials.Poor
Different labs6 labs.Good

What this review can't tell you (1)

Lab results describe the vials that were tested, not future batches or other products, and say nothing about whether a peptide is safe or suitable for you.

Shop reputation

Paramount Peptides store status, shipping and payment

Kept apart from the lab results: a smooth delivery says nothing about what's in a vial, and a clean lab report says nothing about refunds.

Not reviewed yet

We haven't checked this shop's storefront, registration, news or complaint records yet, so this part isn't graded and doesn't count toward the verdict. Know something we should look at? Tell us.

All tests

Every Paramount Peptides vial tested

A vial passes if it's the right peptide, at least 99.5% pure and within 35% of the labelled dose. Tap a vial for its batch, sender and lab report.

Comparison

Paramount Peptides vs other peptide vendors

Same peptide, same 12 months, same rules for every shop. Check the number of vials before comparing rates.

Tirzepatide

Feb 2, 2025 – Feb 2, 2026 · 190 shops tested

Paramount Peptides
9 vials · typical error 11.4%
Passed
78%7/9
Quantity within 10%
33%3/9
11.4%
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HK Peptides
79 vials · typical error 5.8%
Passed
87%67/77
Quantity within 10%
64%49/76
5.8%
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ZLZ Peptide
62 vials · typical error 6.8%
Passed
87%54/62
Quantity within 10%
66%41/62
6.8%
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Oupeptide
52 vials · typical error 7%
Passed
83%43/52
Quantity within 10%
59%30/51
7%
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Shanghai Sigma Audley SSA
39 vials · typical error 6.7%
Passed
82%32/39
Quantity within 10%
74%29/39
6.7%
–

Market average across all 190 shops: 79% passed, 61% within 10% of the label.

The 4 open shops with the most Tirzepatide records in the same window, chosen by record count only.

Methodology

How we grade

Three separate scores out of 100, combined into one letter grade. Great reviews can never make up for bad lab results.

Lab results45%

How pure each vial was and how close it came to the labelled dose. Recent tests count more; a wrong peptide scores zero.

Strength of evidence25%

How many vials were tested, whether they were bought anonymously, and whether the reports can be checked.

Shop reputation30%

Starts at 100 and loses points for each problem we can source. Customer reviews never change a lab result.

Grade scale

A90+
B80+
C70+
D60+
F<60

Evidence uses lower cut-offs, because anonymous purchases are rare across the market.

Limits on the overall grade

Never higher than the lab-results grade.
D at most if the shop can't be ordered from, has a critical problem or fails its lab tests.
C at most if the evidence is very weak.
No lab results means no grade.

Full scoring rulesPoints, caps and cut-offs behind each score

Lab results

Each vial scores out of 100: half for purity, half for how close it was to the labelled dose.
A wrong peptide scores zero, and costs the shop 1.5 more points for every 1% of vials affected.
A vial that tests positive for bacterial toxins can score no more than 30.
Recent vials count more than old ones. Reports the shop published itself count 50%.
With only a few vials, we hold back: one perfect vial can't earn an A.

Strength of evidence

How many vials were tested (up to 35 points).
Whether they were bought anonymously, like a customer would (up to 20).
Batch numbers, how recent the tests are, a lab report you can check, contamination tests and more than one lab (the remaining 45).
Cut-offs: A 80+ · B 70+ · C 60+ · D 50+ · F 0+.

Shop reputation

Starts at 100. Each problem we can source costs points: critical 35, major 20, minor 7.
"Not reviewed yet" until we've checked, and then it doesn't count toward the overall grade.
Customer reviews inform this score only; they never change a lab result.

What the lab grade means. A: Vials were the right peptide, very pure and close to the labelled dose. C: Results were mixed: some measurements missed the mark. F: Results often failed: wrong peptide, low purity or far-off doses.

Where the data comes from, and what we didn't doSources, the basic check, missing data, authorship

Lab data. Results come from independent lab records, each published with its lab report. We copy the measurements, link the report, and grade them ourselves; nobody else's rating is used. The data is refreshed at most hourly.

The basic check. A vial passes if it's the right peptide, at least 99.5% pure, and within 35% of the labelled dose. A vial missing purity or dose is marked "not enough data", never a pass.

Missing data and look-alikes. Missing values are shown as "not measured" or "not checked". Shops with similar names aren't combined unless a connection is documented.

What we didn't do. Unless a vial says otherwise, we didn't buy or test it ourselves, didn't confirm reports with the labs, and didn't contact the shop.

Authorship. This page is compiled automatically from lab data and hasn't been reviewed by an editor yet. We have no affiliate relationship with Paramount Peptides and earn nothing from it.

Have evidence we should see? Lab reports with a batch number, order records or corrections can be sent through our contact page or to editorial@peptidevendorreviews.org.

The same rubric applies to every shop, and commercial relationships never change ratings, grades, rankings, or the selection of alternatives. Partner links are labelled. A grade describes the evidence on the date shown. It isn't advice to buy or avoid a shop, or a judgement on whether any peptide is safe or right for you. Rubric grading-v2 (2026-10-24).

Elsewhere

Where Paramount Peptides is discussed

Customer reviews and forum threads are kept off this page. These links open the conversations people search for.

FAQ

Paramount Peptides reviews: common questions

Is Paramount Peptides legit?

The reviewed evidence receives grade B under our published rubric. Independent labs have tested 65 of its vials across 8 peptides; 65 were the right peptide and 45 passed our basic check. Failed: Tirzepatide 20 mg (batch 01/2026) (failed: purity was 99.08%, below 99.5%); BPC-157 5 mg (failed: purity was 98.573%, below 99.5%); CJC-1295 10 mg (batch HDAC-0002) (failed: purity was 99.144%, below 99.5%); CJC-1295 10 mg (batch HDAC-0002) (failed: purity was 99.126%, below 99.5%); Survodutide 6 mg (batch SUR6N12192024) (failed: purity was 98.577%, below 99.5%); Survodutide 6 mg (batch SUR6N12192024) (failed: purity was 98.615%, below 99.5%); BPC-157 10 mg (batch BPC10N020725) (failed: purity was 98.94%, below 99.5%); PT-141 10 mg (batch PT-141-0003) (failed: purity was 98.85%, below 99.5%); CJC-1295 10 mg (batch NDAC10N110624) (failed: purity was 98.54%, below 99.5%); Ipamorelin 10 mg (batch HIPA-0003) (failed: purity was 99.488%, below 99.5%); BPC-157 10 mg (batch BPC10N12122024) (failed: purity was 98.075%, below 99.5%); Retatrutide 12 mg (batch RET12N11142004) (failed: purity was 99.488%, below 99.5%); CJC-1295 10 mg (batch NDAC10N110624) (failed: purity was 97.951%, below 99.5%); Tirzepatide 10 mg (batch TIR10n01162025) (failed: purity was 99.319%, below 99.5%); Tirzepatide 10 mg (failed: purity was 99.08%, below 99.5%); BPC-157 10 mg (failed: the dose was +43.2% from the label, beyond the 35% limit); CJC-1295 10 mg (failed: purity was 90.07%, below 99.5%); Tirzepatide 10 mg (failed: purity was 98.912%, below 99.5%); BPC-157 10 mg (failed: purity was 99.233%, below 99.5%; the dose was +39.5% from the label, beyond the 35% limit); CJC-1295 10 mg (failed: purity was 99.102%, below 99.5%). We grade lab evidence and published facts; grades are not endorsements and do not determine whether a business acts lawfully.

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What do Paramount Peptides' lab results show?

65 vials tested between Jan 14, 2025 and Feb 2, 2026: Retatrutide (12), BPC-157 (11), Tirzepatide (11), CJC-1295 (9), Semaglutide (9), Ipamorelin (7), PT-141 (3) and Survodutide (3). 65 of 65 were the right peptide, purity was measured on 65, and 10 of 65 were within 5% of the labelled dose. 20 failed our basic check (right peptide, at least 99.5% pure, within 35% of the labelled dose).

Who sent Paramount Peptides' vials for testing?

bought by the independent tester (58) and sent in anonymously (7). TrustPointe (22), Chromate (16), MZ Biolabs (11), Freedom Diagnostics (8), Krause Analytical (6) and Janoshik (2) ran the tests. 58 were bought by the tester like a normal customer.

Does Paramount Peptides have a discount code?

We haven't verified a discount code for Paramount Peptides. We only list codes we have seen on the shop's site or confirmed at checkout.

Paramount Peptides website

Recorded sample grade: B. Reta-Peptide has sample grade A.

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Sources

Sources, updates and corrections

Independent lab test records, one linked per vial in the test list · Test data: Finnrick Analytics · read Nov 11, 2026

For this shop

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