Barn reviews
Barn reviews: 8 independent lab tests across 1 product, with a limited lab record.
Written by the Peptide Vendor Reviews editorial team
Is Barn legit? Lab record: Limited
How we rate- 8 independent tests
- 6 of 6 lots filled to label
- Median purity 99.9%
- Its tested product graded C or better
Opens the vendor's site. We don't earn from this link, and no one pays to rank.
Vendor website
Visit Barn
8 independent COAs · not paid-to-rank · 0 of 6 lots under label
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Peptide Vendor Reviews independently tests products and verifies reviews. Public methodology, no pay-to-rank.
Barn 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 Barn's site.
- RetatrutideBGOOD
- Tests
- 8
- Passed
- 83.3%
What the testing shows
Across 6 measured samples from Barn, 0 came in more than 5% under the quantity on the label (0%). Another 3 measured more than 5% over. Purity across 6 readings ran from 98.2% to 99.9%, median 99.9%. Samples span Mar 2026 to Oct 2026.
- Under label
- 0/6
- Median purity
- 99.9%
- Latest sample
- Oct 2026
more than 5% short
98.2%–99.9% range
first tested Mar 2026
Our read on Barn
5 of Barn's 6 graded samples passed (83%), and 100% of all samples were sent in by buyers rather than by the shop.
When a sample failed, the most common reason was no purity figure on the certificate (2 times).
Against the 302 shops with at least five graded tests, Barn's pass rate is at or above 77% of them, and it has more tests on record than 22% of them.
When and how Barn was tested
Samples per month. The darker part of each bar failed.
- Labs used
- BTLabs (5), Krause Analytical (3)
- Who sent the samples
- buyers 100%
- Batches covered
- 5 distinct batch numbers; 3 checked for endotoxins
Why Barn's failed samples failed
The only failed test, with the lab's reason.
Retatrutide · Jun 8, 2026
purity under 99.5%
Lab testing results
Independent results across 1 product.
Individual lab tests
Date
10/6/2026
Purity
99.9%
Quantity
50 mg → 54.3 mg
Lab
BTLabs
Vial
No label / Silver crimp / Black cap
Date
6/8/2026
Purity
98.2%
Quantity
30 mg → 37.1 mg
Lab
BTLabs
Vial
No label / Silver crimp / Violet cap
Date
6/6/2026
Purity
—
Quantity
—
Lab
BTLabs
Vial
No label / Silver crimp / Violet cap
Date
5/21/2026
Purity
—
Quantity
—
Lab
BTLabs
Vial
White label / Silver crimp / Pink cap
Date
5/13/2026
Purity
99.7%
Quantity
30 mg → 31.2 mg
Lab
BTLabs
Vial
White label / Silver crimp / Pink cap
| Product | Date | Score | Purity | Quantity | Lab | COA |
|---|---|---|---|---|---|---|
| RetatrutideNo label / Silver crimp / Black cap | 10/6/2026 | 10.0 | 99.9% | 50 mg → 54.3 mg | BTLabs | View |
| RetatrutideNo label / Silver crimp / Violet cap | 6/8/2026 | 9.8 | 98.2% | 30 mg → 37.1 mg | BTLabs | View |
| RetatrutideNo label / Silver crimp / Violet cap | 6/6/2026 | — | — | BTLabs | View | |
| RetatrutideWhite label / Silver crimp / Pink cap | 5/21/2026 | — | — | BTLabs | View | |
| RetatrutideWhite label / Silver crimp / Pink cap | 5/13/2026 | 10.0 | 99.7% | 30 mg → 31.2 mg | BTLabs | View |
Which Barn products tested best
Retatrutide has the strongest record, graded A or B.
Buying from Barn
If you order from Barn, start with the graded products in the table: each one links straight to the shop.
We don't track Barn's prices yet. Shipping, payment and refund terms are on their site.
The official store is t.me/+UYRVjzIFDy9iYzc9. 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 Barn
Create a free account to save this vendor, get alerts for new lab tests, and watch price changes.
Barn: common questions
Is Barn legit?
We rate lab records, not businesses. Limited lab record: 8 independent tests, 6 of 6 lots filled to label, median purity 99.9%, its tested product graded C or better. Each result links to its original certificate in the table above.
What do Barn reviews say?
We don't hold scored customer reviews for Barn yet. The independent lab results on this page are the evidence we have.
Which Barn peptides tested best?
We have graded 1 Barn product. Retatrutide graded A or B.
Is there a Barn coupon code?
We don't have a verified Barn coupon code. A discount changes the price, not what is in the vial.
Ordering from Barn?
Limited lab record: 8 independent tests, 6 of 6 lots filled to label, median purity 99.9%, its tested product graded C or better.