Mei Peptide reviews
Mei Peptide reviews: 8 independent lab tests across 2 products, with a limited lab record.
Written by the Peptide Vendor Reviews editorial team
Is Mei Peptide legit? Lab record: Limited
How we rate- 8 independent tests
- 5 of 7 lots filled to label
- Median purity 99.9%
- 1 of 2 products graded D or E
Some of Mei Peptide's products graded D or E. The shops below tested A or B for the same peptides.
Better-tested Retatrutide
Mei Peptide graded D. 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 Mei 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.
Retatrutide
Mei Peptide: grade DMei 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 Mei Peptide's site.
- GHK-CuAGREAT
- Tests
- 3
- Passed
- 100.0%
- RetatrutideDPOOR
- Tests
- 5
- Passed
- 60.0%
What the testing shows
Across 7 measured samples from Mei Peptide, 2 came in more than 5% under the quantity on the label (29%). Another 2 measured more than 5% over. Purity across 7 readings ran from 99.6% to 99.9%, median 99.9%. Samples span Oct 2025 to Aug 2026.
- Under label
- 2/7
- Median purity
- 99.9%
- Latest sample
- Aug 2026
more than 5% short
99.6%–99.9% range
first tested Oct 2025
Our read on Mei Peptide
6 of Mei Peptide's 8 graded samples passed (75%), and 100% of all samples were sent in by buyers rather than by the shop.
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, Mei Peptide's pass rate is at or above 60% of them, and it has more tests on record than 22% of them.
When and how Mei Peptide was tested
Samples per month. The darker part of each bar failed.
- Labs used
- Krause Analytical (6), BTLabs (2)
- Who sent the samples
- buyers 100%
- Batches covered
- 6 distinct batch numbers; 1 checked for endotoxins
Why Mei Peptide's failed samples failed
The 2 most recent failed tests, with the lab's reason.
Retatrutide · Jul 13, 2026
the lab could not confirm it was the labelled peptide
Retatrutide · Jun 2, 2026
amount in the vial more than 35% off the label
Lab testing results
Independent results across 2 products.
Individual lab tests
Date
8/31/2026
Purity
99.6%
Quantity
5 mg → 5.3 mg
Lab
BTLabs
Vial
No label / Silver crimp / Blue cap
Date
7/20/2026
Purity
99.6%
Quantity
50 mg → 41.3 mg
Lab
BTLabs
Vial
No label / Silver crimp / Clear Blue cap
Date
7/13/2026
Purity
—
Quantity
—
Lab
Krause Analytical
Vial
No label / Copper crimp / White cap
Date
6/16/2026
Purity
99.9%
Quantity
50 mg → 49.9 mg
Lab
Krause Analytical
Vial
Silver label / Silver crimp / White cap
Date
6/2/2026
Purity
99.9%
Quantity
20 mg → 29 mg
Lab
Krause Analytical
Vial
No label / Silver crimp / Violet cap
| Product | Date | Score | Purity | Quantity | Lab | COA |
|---|---|---|---|---|---|---|
| RetatrutideNo label / Silver crimp / Blue cap | 8/31/2026 | 10.0 | 99.6% | 5 mg → 5.3 mg | BTLabs | View |
| GHK-CuNo label / Silver crimp / Clear Blue cap | 7/20/2026 | 10.0 | 99.6% | 50 mg → 41.3 mg | BTLabs | View |
| RetatrutideNo label / Copper crimp / White cap | 7/13/2026 | — | — | Krause Analytical | View | |
| GHK-CuSilver label / Silver crimp / White cap | 6/16/2026 | 10.0 | 99.9% | 50 mg → 49.9 mg | Krause Analytical | View |
| RetatrutideNo label / Silver crimp / Violet cap | 6/2/2026 | 10.0 | 99.9% | 20 mg → 29 mg | Krause Analytical | View |
Which Mei Peptide products tested best
GHK-Cu has the strongest record, graded A or B.
Retatrutide graded D or E: a large share of its samples missed purity or quantity thresholds.
Buying from Mei Peptide
If you order from Mei 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 Mei Peptide's prices yet. Shipping, payment and refund terms are on their site.
The official store is www.meipeptide.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 Mei Peptide
Create a free account to save this vendor, get alerts for new lab tests, and watch price changes.
Mei Peptide: common questions
Is Mei Peptide legit?
We rate lab records, not businesses. Limited lab record: 8 independent tests, 5 of 7 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 Mei Peptide reviews say?
We don't hold scored customer reviews for Mei Peptide yet. The independent lab results on this page are the evidence we have.
Which Mei Peptide peptides tested best?
We have graded 2 Mei Peptide products. GHK-Cu graded A or B. Retatrutide graded D or E.
Is there a Mei Peptide coupon code?
We don't have a verified Mei Peptide coupon code. A discount changes the price, not what is in the vial.
Ordering from Mei Peptide?
Limited lab record: 8 independent tests, 5 of 7 lots filled to label, median purity 99.9%, 1 of 2 products graded D or E.
About Mei Peptide
Currently down according to client, https://www.facebook.com/Meipeptide Previusly https://mtmeipeptide.com (Down) now https://www.meipeptide.com/ Erased Mei-Peptide and fusion with Mei Peptide