Reta Peptide Review
Reta Peptide reviews: 260 independent lab tests across 15 products, with a mixed lab record.
Written by the Peptide Vendor Reviews editorial team
Is Reta-Peptide legit? Lab record: Mixed
How we rate- 260 independent tests
- 195 of 246 lots filled to label
- Median purity 99.82%
- 7 of 15 products graded D or E
Some of Reta-Peptide's products graded D or E. The shops below tested A or B for the same peptides.
Better-tested MOTS-c
Reta-Peptide graded E. Warrior Makers's MOTS-c graded A across 2 tests.
Buy from Warrior MakersAll better-tested optionsPeptide Vendor Reviews independently tests products and verifies reviews. Public methodology, no pay-to-rank.
Better-tested options
Where Reta-Peptide graded D or E, these shops' samples of the same peptide graded A or B. Ordered by grade, then price per mg. Partner status never changes the order.
Reta-Peptide products we've tested
Best-graded first. Grades come from the share of each product's samples that passed purity and quantity checks. Buy links open Reta-Peptide's site.
- GHK-CuAGREAT
- Tests
- 28
- Passed
- 96.4%
- SemaglutideAGREAT
- Tests
- 2
- Passed
- 100.0%
- RetatrutideBGOOD
- Tests
- 85
- Passed
- 84.5%
- TirzepatideBGOOD
- Tests
- 36
- Passed
- 88.9%
- IpamorelinBGOOD
- Tests
- 16
- Passed
- 87.5%
- PT-141BGOOD
- Tests
- 6
- Passed
- 83.3%
- CagrilintideCOKAY
- Tests
- 4
- Passed
- 75.0%
- SS-31COKAY
- Tests
- 4
- Passed
- 75.0%
- Melanotan IIDPOOR
- Tests
- 5
- Passed
- 60.0%
- BPC-157EBAD
- Tests
- 20
- Passed
- 50.0%
- TesamorelinEBAD
- Tests
- 19
- Passed
- 47.4%
- TB-500EBAD
- Tests
- 13
- Passed
- 38.5%
- MOTS-cEBAD
- Tests
- 9
- Passed
- 55.6%
- CJC-1295EBAD
- Tests
- 9
- Passed
- 33.3%
- NAD+EBAD
- Tests
- 4
- Passed
- 50.0%
What the testing shows
Across 246 measured samples from Reta-Peptide, 51 came in more than 5% under the quantity on the label (21%). Another 81 measured more than 5% over. Purity across 249 readings ran from 38.2% to 100%, median 99.82%. Samples span Jun 2025 to Oct 2026.
- Under label
- 51/246
- Median purity
- 99.82%
- Latest sample
- Oct 2026
- Ships from
- United States
more than 5% short
38.2%–100% range
first tested Jun 2025
per vendor listing
Our read on Reta-Peptide
194 of Reta-Peptide's 259 graded samples passed (75%), and 100% of all samples were sent in by buyers rather than by the shop.
The pass rate has held steady: 75% over the latest six months against 75% before.
When a sample failed, the most common reason was purity under 99.5% (51 times).
10 samples failed identity, meaning the lab could not confirm the vial held the labelled peptide.
Against the 302 shops with at least five graded tests, Reta-Peptide's pass rate is at or above 59% of them, and it has more tests on record than 98% of them.
When and how Reta-Peptide was tested
Samples per month. The darker part of each bar failed.
- Labs used
- Krause Analytical (195), BTLabs (49), Chromate (8), Freedom Diagnostics (4)
- Who sent the samples
- buyers 100%
- Batches covered
- 109 distinct batch numbers; 35 checked for endotoxins
Why Reta-Peptide's failed samples failed
The 6 most recent failed tests, with the lab's reason.
MOTS-c · Oct 12, 2026
purity under 99.5%
BPC-157 · Sep 20, 2026
purity under 99.5%
TB-500 · Sep 3, 2026
the lab could not confirm it was the labelled peptide
NAD+ · Aug 3, 2026
purity under 99.5%
MOTS-c · Aug 3, 2026
purity under 99.5%
Retatrutide · Jul 20, 2026
purity under 99.5%; amount in the vial more than 35% off the label
Lab testing results
Independent results across 15 products.
Individual lab tests
Date
10/12/2026
Purity
99.9%
Quantity
10 mg → 10.3 mg
Lab
Krause Analytical
Vial
Silver crimp / Green cap
Date
10/12/2026
Purity
98.4%
Quantity
40 mg → 39.9 mg
Lab
Krause Analytical
Vial
Silver crimp / Red cap
Date
9/20/2026
Purity
99.34%
Quantity
5 mg → 5 mg
Lab
PharmLabs
Vial
No label / Silver crimp / Clear Red cap
Date
9/17/2026
Purity
99.9%
Quantity
30 mg → 24.1 mg
Lab
Krause Analytical
Vial
No label / Silver crimp / Clear cap
Date
9/15/2026
Purity
99.9%
Quantity
50 mg → 47.1 mg
Lab
Krause Analytical
Vial
No label / Silver crimp / Blue cap
| Product | Date | Score | Purity | Quantity | Lab | COA |
|---|---|---|---|---|---|---|
| TesamorelinSilver crimp / Green cap | 10/12/2026 | 10.0 | 99.9% | 10 mg → 10.3 mg | Krause Analytical | View |
| MOTS-cSilver crimp / Red cap | 10/12/2026 | 9.8 | 98.4% | 40 mg → 39.9 mg | Krause Analytical | View |
| BPC-157No label / Silver crimp / Clear Red cap | 9/20/2026 | 9.9 | 99.34% | 5 mg → 5 mg | PharmLabs | View |
| RetatrutideNo label / Silver crimp / Clear cap | 9/17/2026 | 10.0 | 99.9% | 30 mg → 24.1 mg | Krause Analytical | View |
| GHK-CuNo label / Silver crimp / Blue cap | 9/15/2026 | 10.0 | 99.9% | 50 mg → 47.1 mg | Krause Analytical | View |
Which Reta-Peptide products tested best
Semaglutide, GHK-Cu, Tirzepatide, Ipamorelin, Retatrutide and PT-141 have the strongest record, graded A or B.
Cagrilintide and SS-31 graded C.
Melanotan II, MOTS-c, NAD+, BPC-157, Tesamorelin, TB-500 and CJC-1295 graded D or E: a large share of their samples missed purity or quantity thresholds.
Buying from Reta-Peptide
If you order from Reta-Peptide, the A- and B-graded products are the safer picks on this record. For the weaker ones, the better-tested options on this page come from other shops.
We don't track Reta-Peptide's prices yet. Shipping, payment and refund terms are on their site.
The official store is reta-peptide.com. Check the address before you pay.
What to check before you pay
- The lot number on the vial matches the certificate
- The certificate names the lab and the test date
- Fill versus label, not purity alone
- A refund policy in writing
Track Reta-Peptide
Create a free account to save this vendor, get alerts for new lab tests, and watch price changes.
Reta-Peptide: common questions
Is Reta-Peptide legit?
We rate lab records, not businesses. Mixed lab record: 260 independent tests, 195 of 246 lots filled to label, median purity 99.82%, 7 of 15 products graded D or E. Each result links to its original certificate in the table above.
What do Reta-Peptide reviews say?
We don't hold scored customer reviews for Reta-Peptide yet. The independent lab results on this page are the evidence we have.
Which Reta-Peptide peptides tested best?
We have graded 15 Reta-Peptide products. Semaglutide, GHK-Cu, Tirzepatide, Ipamorelin, Retatrutide and PT-141 graded A or B. Melanotan II, MOTS-c, NAD+, BPC-157, Tesamorelin, TB-500 and CJC-1295 graded D or E.
Is there a Reta-Peptide coupon code?
We don't have a verified Reta-Peptide coupon code. A discount changes the price, not what is in the vial.
Where does Reta-Peptide ship from?
Public listings place Reta-Peptide's shipping origin in United States. Check the shop's own shipping page before ordering, as origin can change.
Ordering from Reta-Peptide?
Mixed lab record: 260 independent tests, 195 of 246 lots filled to label, median purity 99.82%, 7 of 15 products graded D or E.