YH Peptide reviews
YH Peptide reviews: 7 independent lab tests across 2 products, with a limited lab record.
Written by the Peptide Vendor Reviews editorial team
Is YH Peptide legit? Lab record: Limited
How we rate- 7 independent tests
- 5 of 6 lots filled to label
- Median purity 99.9%
- 1 of 2 products graded D or E
Some of YH Peptide's products graded D or E. The shops below tested A or B for the same peptides.
Better-tested Retatrutide
YH 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 YH 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
YH Peptide: grade DYH 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 YH Peptide's site.
- TirzepatideAGREAT
- Tests
- 4
- Passed
- 100.0%
- RetatrutideDPOOR
- Tests
- 3
- Passed
- 66.7%
What the testing shows
Across 6 measured samples from YH Peptide, 1 came in more than 5% under the quantity on the label (17%). Another 1 measured more than 5% over. Purity across 6 readings ran from 99.9% to 99.9%, median 99.9%. Samples span Apr 2026 to Sep 2026.
- Under label
- 1/6
- Median purity
- 99.9%
- Latest sample
- Sep 2026
more than 5% short
99.9%–99.9% range
first tested Apr 2026
Our read on YH Peptide
6 of YH Peptide's 7 graded samples passed (86%), 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, YH Peptide's pass rate is at or above 83% of them, and it has more tests on record than 17% of them.
When and how YH Peptide was tested
Samples per month. The darker part of each bar failed.
- Labs used
- Krause Analytical (5), BTLabs (2)
- Who sent the samples
- buyers 100%
- Batches covered
- 3 distinct batch numbers; 2 checked for endotoxins
Why YH Peptide's failed samples failed
The only failed test, with the lab's reason.
Retatrutide · Jun 24, 2026
the lab could not confirm it was the labelled peptide
Lab testing results
Independent results across 2 products.
Individual lab tests
Date
9/19/2026
Purity
99.9%
Quantity
10 mg → 10.7 mg
Lab
BTLabs
Vial
No label / Silver crimp / Black cap
Date
8/21/2026
Purity
99.9%
Quantity
30 mg → 30.6 mg
Lab
BTLabs
Vial
No label / Silver crimp / Red cap
Date
8/3/2026
Purity
99.9%
Quantity
70 mg → 65.2 mg
Lab
Krause Analytical
Vial
No label / Silver crimp / Green cap
Date
6/24/2026
Purity
—
Quantity
—
Lab
Krause Analytical
Vial
Silver label / Silver crimp / Blue cap
| Product | Date | Score | Purity | Quantity | Lab | COA |
|---|---|---|---|---|---|---|
| TirzepatideNo label / Silver crimp / Black cap | 9/19/2026 | 10.0 | 99.9% | 10 mg → 10.7 mg | BTLabs | View |
| TirzepatideNo label / Silver crimp / Red cap | 8/21/2026 | 10.0 | 99.9% | 30 mg → 30.6 mg | BTLabs | View |
| TirzepatideNo label / Silver crimp / Green cap | 8/3/2026 | 10.0 | 99.9% | 70 mg → 65.2 mg | Krause Analytical | View |
| RetatrutideSilver label / Silver crimp / Blue cap | 6/24/2026 | — | — | Krause Analytical | View | |
| Tirzepatide | 6/12/2026 | 10.0 | 99.9% | 60 mg → 59.4 mg | Krause Analytical | View |
Which YH Peptide products tested best
Tirzepatide 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 YH Peptide
If you order from YH 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 YH Peptide's prices yet. Shipping, payment and refund terms are on their site.
The official store is www.yhpeptide.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 YH Peptide
Create a free account to save this vendor, get alerts for new lab tests, and watch price changes.
YH Peptide: common questions
Is YH Peptide legit?
We rate lab records, not businesses. Limited lab record: 7 independent tests, 5 of 6 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 YH Peptide reviews say?
We don't hold scored customer reviews for YH Peptide yet. The independent lab results on this page are the evidence we have.
Which YH Peptide peptides tested best?
We have graded 2 YH Peptide products. Tirzepatide graded A or B. Retatrutide graded D or E.
Is there a YH Peptide coupon code?
We don't have a verified YH Peptide coupon code. A discount changes the price, not what is in the vial.
Ordering from YH Peptide?
Limited lab record: 7 independent tests, 5 of 6 lots filled to label, median purity 99.9%, 1 of 2 products graded D or E.