Peptira Reviews
Peptira review: 9 independent lab tests across 3 products, with a limited lab record.
Written by the Peptide Vendor Reviews editorial team
Is Peptira legit? Lab record: Limited
How we rate- 9 independent tests
- 6 of 8 lots filled to label
- Median purity 99.75%
- 2 of 3 products graded D or E
Some of Peptira's products graded D or E. The shops below tested A or B for the same peptides.
Better-tested Retatrutide
Peptira graded E. Paradigm Peptide's Retatrutide graded A across 8 tests, $10.00 / 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 Peptira 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.
Retatrutide
Peptira: grade EPeptira 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 Peptira's site.
- GHK-CuAGREAT
- Tests
- 1
- Passed
- 100.0%
- TirzepatideDPOOR
- Tests
- 3
- Passed
- 66.7%
- RetatrutideEBAD
- Tests
- 5
- Passed
- 20.0%
What the testing shows
Across 8 measured samples from Peptira, 2 came in more than 5% under the quantity on the label (25%). Another 4 measured more than 5% over. Purity across 8 readings ran from 87.25% to 99.9%, median 99.75%. Samples span Feb 2026 to Sep 2026.
- Under label
- 2/8
- Median purity
- 99.75%
- Latest sample
- Sep 2026
- Ships from
- United States
more than 5% short
87.25%–99.9% range
first tested Feb 2026
per vendor listing
Our read on Peptira
4 of Peptira's 9 graded samples passed (44%), and 100% 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% (3 times).
1 sample failed identity, meaning the lab could not confirm the vial held the labelled peptide.
Against the 302 shops with at least five graded tests, Peptira's pass rate is at or above 12% of them, and it has more tests on record than 27% of them.
When and how Peptira was tested
Samples per month. The darker part of each bar failed.
- Labs used
- BTLabs (4), Krause Analytical (4), Ichor Life Sciences (1)
- Who sent the samples
- buyers 100%
- Batches covered
- 6 distinct batch numbers; 2 checked for endotoxins
Why Peptira's failed samples failed
The 5 most recent failed tests, with the lab's reason.
Retatrutide · Sep 16, 2026
purity under 99.5%
Tirzepatide · Aug 2, 2026
the lab could not confirm it was the labelled peptide
Retatrutide · Jul 9, 2026
purity under 99.5%
Retatrutide · May 8, 2026
amount in the vial more than 35% off the label
Retatrutide · Feb 22, 2026
purity under 99.5%
Lab testing results
Independent results across 3 products.
Individual lab tests
Date
9/16/2026
Purity
87.25%
Quantity
30 mg → 39.3441 mg
Lab
Ichor Life Sciences
Vial
White label / Silver crimp / Pink cap
Date
8/2/2026
Purity
—
Quantity
—
Lab
BTLabs
Vial
No Label / Silver Crimp / Clear Cap
Date
7/9/2026
Purity
99.7%
Quantity
50 mg → 40.6 mg
Lab
BTLabs
Vial
No label / Silver crimp / Blue cap
Date
7/9/2026
Purity
99.4%
Quantity
10 mg → 10.9 mg
Lab
BTLabs
Vial
No label / Silver crimp / Black cap
Date
6/17/2026
Purity
99.8%
Quantity
10 mg → 11.7 mg
Lab
BTLabs
Vial
No label / Silver crimp / White cap
| Product | Date | Score | Purity | Quantity | Lab | COA |
|---|---|---|---|---|---|---|
| RetatrutideWhite label / Silver crimp / Pink cap | 9/16/2026 | 8.7 | 87.25% | 30 mg → 39.3441 mg | Ichor Life Sciences | View |
| TirzepatideNo Label / Silver Crimp / Clear Cap | 8/2/2026 | — | — | BTLabs | View | |
| GHK-CuNo label / Silver crimp / Blue cap | 7/9/2026 | 10.0 | 99.7% | 50 mg → 40.6 mg | BTLabs | View |
| RetatrutideNo label / Silver crimp / Black cap | 7/9/2026 | 9.9 | 99.4% | 10 mg → 10.9 mg | BTLabs | View |
| TirzepatideNo label / Silver crimp / White cap | 6/17/2026 | 10.0 | 99.8% | 10 mg → 11.7 mg | BTLabs | View |
Four Retatrutide tests, one short vial
We have four independent Retatrutide tests for Peptira, run between February and July 2026 at Krause Analytical and BTLabs. Retatrutide graded E: one of the four samples passed every threshold.
The short vial is the one to read first. Lot RETA10-004, labeled 10 mg, measured 6.16 mg, which is 38% under label, even though purity was 99.9%. High purity doesn't make up for a short fill.
The other three were in range or above it. A 30 mg lot measured 30 mg, a second reading of that lot measured 31.9 mg, and a 10 mg vial from March measured 10.9 mg.
Buying from Peptira
If you buy Peptira's Retatrutide, check the lot number against the table above before you assume your vial matches the good ones. We have no data on the rest of its catalog yet.
For Retatrutide from shops with stronger records, see the better-tested options on this page.
What to check before you pay
- The lot on the vial against the table above - Measured amount versus the label, not purity alone - The certificate names the lab - The refund policy before you order
Track Peptira
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Peptira: common questions
Is Peptira legit?
We rate lab records, not businesses. Limited lab record: 9 independent tests, 6 of 8 lots filled to label, median purity 99.75%, 2 of 3 products graded D or E. Each result links to its original certificate in the table above.
What do Peptira reviews say?
We don't hold scored customer reviews for Peptira yet. The independent lab results on this page are the evidence we have.
Which Peptira peptides tested best?
We have graded 3 Peptira products. GHK-Cu graded A or B. Tirzepatide and Retatrutide graded D or E.
Is there a Peptira coupon or discount code?
We don't have a verified Peptira coupon or discount code. A discount changes the price, not what is in the vial.
What do people say about Peptira on Reddit and forums?
Forum and Reddit reports on Peptira vary, as they do for most shops. Posts that name a lot number can be checked against the certificates here.
Where does Peptira ship from?
Public listings place Peptira's shipping origin in United States. Check the shop's own shipping page before ordering, as origin can change.
Ordering from Peptira?
Limited lab record: 9 independent tests, 6 of 8 lots filled to label, median purity 99.75%, 2 of 3 products graded D or E.