Is Peptide Gurus Legit
Is Peptide Gurus Legit? 46 independent lab tests across 8 products, with a mixed lab record.
Written by the Peptide Vendor Reviews editorial team
Lab record: Mixed
How we rate- 46 independent tests
- 18 of 40 lots filled to label
- Median purity 98.86%
- 2 of 3 products graded D or E
Some of Peptide Gurus's products graded D or E. The shops below tested A or B for the same peptides.
Better-tested Tirzepatide
Peptide Gurus graded E. Paradigm Peptide's Tirzepatide graded A across 10 tests, $4.97 / mg.
Buy from Paradigm PeptideAll better-tested optionsPeptide Vendor Reviews independently tests products and verifies reviews. Public methodology, no pay-to-rank.
Better-tested options
Where Peptide Gurus 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.
Tirzepatide
Peptide Gurus: grade ECJC-1295
Peptide Gurus: grade EPeptide Gurus 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 Peptide Gurus' site.
- SemaglutideAGREAT
- Tests
- 6
- Passed
- 100.0%
- TirzepatideEBAD
- Tests
- 7
- Passed
- 28.6%
- CJC-1295EBAD
- Tests
- 6
- Passed
- 16.7%
- BPC-157—
- Tests
- 7
- Passed
- —
- Ipamorelin—
- Tests
- 7
- Passed
- —
- Retatrutide—
- Tests
- 7
- Passed
- —
- PT-141—
- Tests
- 3
- Passed
- —
- Melanotan II—
- Tests
- 3
- Passed
- —
What the testing shows
Across 40 measured samples from Peptide Gurus, 22 came in more than 5% under the quantity on the label (55%). Another 12 measured more than 5% over. Purity across 40 readings ran from 96.21% to 99.92%, median 98.86%. Samples span Mar 2025 to Apr 2026.
- Under label
- 22/40
- Median purity
- 98.86%
- Latest sample
- Apr 2026
- Ships from
- United States
more than 5% short
96.21%–99.92% range
first tested Mar 2025
per vendor listing
Our read on Peptide Gurus
9 of Peptide Gurus' 46 graded samples passed (20%), and 9% of all samples were sent in by buyers rather than by the shop.
When a sample failed, the most common reason was purity under 99.5% (31 times).
6 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, Peptide Gurus' pass rate is at or above 3% of them, and it has more tests on record than 76% of them.
When and how Peptide Gurus was tested
Samples per month. The darker part of each bar failed.
- Labs used
- Chromate (26), TrustPointe (18), BTLabs (1), Krause Analytical (1)
- Who sent the samples
- buyers 9%, testing programme 91%
- Batches covered
- No batch numbers on the certificates
Why Peptide Gurus' failed samples failed
The 6 most recent failed tests, with the lab's reason.
Retatrutide · Jul 3, 2025
purity under 99.5%
BPC-157 · May 15, 2025
purity under 99.5%
Ipamorelin · May 14, 2025
purity under 99.5%
Retatrutide · Mar 27, 2025
the lab could not confirm it was the labelled peptide
Retatrutide · Mar 27, 2025
the lab could not confirm it was the labelled peptide
Retatrutide · Mar 27, 2025
the lab could not confirm it was the labelled peptide
Lab testing results
Independent results across 8 products.
Individual lab tests
Date
4/27/2026
Purity
99.6%
Quantity
15 mg → 15.9 mg
Lab
BTLabs
Vial
Black Label / Silver Crimp / White Cap
Date
7/3/2025
Purity
98.39%
Quantity
5 mg → 4.91 mg
Lab
Krause Analytical
Vial
No Label / Silver Crimp / Red Cap
Date
5/15/2025
Purity
96.967%
Quantity
5 mg → 4.86 mg
Lab
Chromate
Vial
No Label / Silver Crimp / White Cap
Date
5/14/2025
Purity
98.156%
Quantity
5 mg → 3.4 mg
Lab
Chromate
Vial
No Label / Copper Crimp / Clear Cap
Date
3/27/2025
Purity
—
Quantity
—
Lab
TrustPointe
Vial
No Label / Silver Crimp / White caps
| Product | Date | Score | Purity | Quantity | Lab | COA |
|---|---|---|---|---|---|---|
| TirzepatideBlack Label / Silver Crimp / White Cap | 4/27/2026 | 10.0 | 99.6% | 15 mg → 15.9 mg | BTLabs | View |
| RetatrutideNo Label / Silver Crimp / Red Cap | 7/3/2025 | 9.8 | 98.39% | 5 mg → 4.91 mg | Krause Analytical | View |
| BPC-157No Label / Silver Crimp / White Cap | 5/15/2025 | 9.7 | 96.967% | 5 mg → 4.86 mg | Chromate | View |
| IpamorelinNo Label / Copper Crimp / Clear Cap | 5/14/2025 | 9.8 | 98.156% | 5 mg → 3.4 mg | Chromate | View |
| RetatrutideNo Label / Silver Crimp / White caps | 3/27/2025 | — | — | TrustPointe | View |
Which Peptide Gurus products tested best
Semaglutide has the strongest record, graded A or B.
Tirzepatide and CJC-1295 graded D or E: a large share of their samples missed purity or quantity thresholds.
Buying from Peptide Gurus
If you order from Peptide Gurus, 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 Peptide Gurus' prices yet. Shipping, payment and refund terms are on their site.
The official store is peptidegurus.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 Peptide Gurus
Create a free account to save this vendor, get alerts for new lab tests, and watch price changes.
Peptide Gurus: common questions
Is Peptide Gurus legit?
We rate lab records, not businesses. Mixed lab record: 46 independent tests, 18 of 40 lots filled to label, median purity 98.86%, 2 of 3 products graded D or E. Each result links to its original certificate in the table above.
What do Peptide Gurus reviews say?
We don't hold scored customer reviews for Peptide Gurus yet. The independent lab results on this page are the evidence we have.
Which Peptide Gurus peptides tested best?
We have graded 3 Peptide Gurus products. Semaglutide graded A or B. Tirzepatide and CJC-1295 graded D or E.
Is there a Peptide Gurus coupon code?
We don't have a verified Peptide Gurus coupon code. A discount changes the price, not what is in the vial.
Where does Peptide Gurus ship from?
Public listings place Peptide Gurus's shipping origin in United States. Check the shop's own shipping page before ordering, as origin can change.
Ordering from Peptide Gurus?
Mixed lab record: 46 independent tests, 18 of 40 lots filled to label, median purity 98.86%, 2 of 3 products graded D or E.
Contact
- AZ, USA
- peptidegurus.com