PepClub USA reviews
PepClub USA reviews: 6 independent lab tests across 2 products, with a limited lab record.
Written by the Peptide Vendor Reviews editorial team
Is PepClub USA legit? Lab record: Limited
How we rate- 6 independent tests
- 2 of 5 lots filled to label
- Median purity 99.9%
- 1 of 2 products graded D or E
Some of PepClub USA's products graded D or E. The shops below tested A or B for the same peptides.
Better-tested Tirzepatide
PepClub USA 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 PepClub USA 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
PepClub USA: grade EPepClub USA 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 PepClub USA's site.
- RetatrutideAGREAT
- Tests
- 4
- Passed
- 100.0%
- TirzepatideEBAD
- Tests
- 2
- Passed
- 50.0%
What the testing shows
Across 5 measured samples from PepClub USA, 3 came in more than 5% under the quantity on the label (60%). Purity across 5 readings ran from 99.6% to 99.9%, median 99.9%. Samples span Mar 2026 to Sep 2026.
- Under label
- 3/5
- Median purity
- 99.9%
- Latest sample
- Sep 2026
more than 5% short
99.6%–99.9% range
first tested Mar 2026
Our read on PepClub USA
5 of PepClub USA's 6 graded samples passed (83%), and 100% of all samples were sent in by buyers rather than by the shop.
Results are slipping: 67% passed over the latest six months, down from 100% before.
When a sample failed, the most common reason was the lab could not confirm it was the labelled peptide (1 time).
Against the 302 shops with at least five graded tests, PepClub USA's pass rate is at or above 78% of them, and it has more tests on record than 9% of them.
When and how PepClub USA was tested
Samples per month. The darker part of each bar failed.
- Labs used
- Krause Analytical (5), BTLabs (1)
- Who sent the samples
- buyers 100%
- Batches covered
- 4 distinct batch numbers
Why PepClub USA's failed samples failed
The only failed test, with the lab's reason.
Tirzepatide · Jul 1, 2026
the lab could not confirm it was the labelled peptide
Lab testing results
Independent results across 2 products.
Individual lab tests
Date
9/24/2026
Purity
99.9%
Quantity
60 mg → 59.1 mg
Lab
Krause Analytical
Vial
No label / Silver crimp / Green cap
Date
7/1/2026
Purity
—
Quantity
—
Lab
Krause Analytical
Vial
White label / Silver crimp / White cap
Date
6/6/2026
Purity
99.6%
Quantity
15 mg → 15.4 mg
Lab
BTLabs
Vial
No label / Silver crimp / Orange cap
Date
3/10/2026
Purity
99.9%
Quantity
40 mg → 33.8 mg
Lab
Krause Analytical
Vial
No Label / Silver Crimp / Red Cap
Date
3/6/2026
Purity
99.9%
Quantity
40 mg → 33.3 mg
Lab
Krause Analytical
Vial
No Label / Silver Crimp / Red Cap
| Product | Date | Score | Purity | Quantity | Lab | COA |
|---|---|---|---|---|---|---|
| TirzepatideNo label / Silver crimp / Green cap | 9/24/2026 | 10.0 | 99.9% | 60 mg → 59.1 mg | Krause Analytical | View |
| TirzepatideWhite label / Silver crimp / White cap | 7/1/2026 | — | — | Krause Analytical | View | |
| RetatrutideNo label / Silver crimp / Orange cap | 6/6/2026 | 10.0 | 99.6% | 15 mg → 15.4 mg | BTLabs | View |
| RetatrutideNo Label / Silver Crimp / Red Cap | 3/10/2026 | 10.0 | 99.9% | 40 mg → 33.8 mg | Krause Analytical | View |
| RetatrutideNo Label / Silver Crimp / Red Cap | 3/6/2026 | 10.0 | 99.9% | 40 mg → 33.3 mg | Krause Analytical | View |
Which PepClub USA products tested best
Retatrutide has the strongest record, graded A or B.
Tirzepatide graded D or E: a large share of its samples missed purity or quantity thresholds.
Buying from PepClub USA
If you order from PepClub USA, 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 PepClub USA's prices yet. Shipping, payment and refund terms are on their site.
The official store is pepclubusa.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 PepClub USA
Create a free account to save this vendor, get alerts for new lab tests, and watch price changes.
PepClub USA: common questions
Is PepClub USA legit?
We rate lab records, not businesses. Limited lab record: 6 independent tests, 2 of 5 lots filled to label, median purity 99.9%, 1 of 2 products graded D or E. Each result links to its original certificate in the table above.
What do PepClub USA reviews say?
We don't hold scored customer reviews for PepClub USA yet. The independent lab results on this page are the evidence we have.
Which PepClub USA peptides tested best?
We have graded 2 PepClub USA products. Retatrutide graded A or B. Tirzepatide graded D or E.
Is there a PepClub USA coupon code?
We don't have a verified PepClub USA coupon code. A discount changes the price, not what is in the vial.
Ordering from PepClub USA?
Limited lab record: 6 independent tests, 2 of 5 lots filled to label, median purity 99.9%, 1 of 2 products graded D or E.