Yidan Biotech reviews
Yidan Biotech reviews: 20 independent lab tests across 4 products, with a mixed lab record.
Written by the Peptide Vendor Reviews editorial team
Is Yidan Biotech legit? Lab record: Mixed
How we rate- 20 independent tests
- 13 of 19 lots filled to label
- Median purity 99.8%
- 2 of 4 products graded D or E
Some of Yidan Biotech's products graded D or E. The shops below tested A or B for the same peptides.
Better-tested 5-Amino-1MQ
Yidan Biotech graded E. Retalux's 5-Amino-1MQ graded A across 3 tests.
Buy from RetaluxAll better-tested optionsPeptide Vendor Reviews independently tests products and verifies reviews. Public methodology, no pay-to-rank.
Better-tested options
Where Yidan Biotech 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.
GHK-Cu
Yidan Biotech: grade DYidan Biotech 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 Yidan Biotech's site.
- TirzepatideBGOOD
- Tests
- 7
- Passed
- 85.7%
- RetatrutideBGOOD
- Tests
- 7
- Passed
- 85.7%
- GHK-CuDPOOR
- Tests
- 3
- Passed
- 66.7%
- 5-Amino-1MQEBAD
- Tests
- 3
- Passed
- 33.3%
What the testing shows
Across 19 measured samples from Yidan Biotech, 6 came in more than 5% under the quantity on the label (32%). Another 5 measured more than 5% over. Purity across 19 readings ran from 98.01% to 99.9%, median 99.8%. Samples span Jan 2026 to Sep 2026.
- Under label
- 6/19
- Median purity
- 99.8%
- Latest sample
- Sep 2026
more than 5% short
98.01%–99.9% range
first tested Jan 2026
Our read on Yidan Biotech
15 of Yidan Biotech's 20 graded samples passed (75%), and 100% of all samples were sent in by buyers rather than by the shop.
Results are improving: 85% passed over the latest six months, up from 57% before.
When a sample failed, the most common reason was purity under 99.5% (4 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, Yidan Biotech's pass rate is at or above 59% of them, and it has more tests on record than 51% of them.
When and how Yidan Biotech was tested
Samples per month. The darker part of each bar failed.
- Labs used
- Krause Analytical (14), BTLabs (6)
- Who sent the samples
- buyers 100%
- Batches covered
- 14 distinct batch numbers; 1 checked for endotoxins
Why Yidan Biotech's failed samples failed
The 5 most recent failed tests, with the lab's reason.
5-Amino-1MQ · Sep 24, 2026
the lab could not confirm it was the labelled peptide
GHK-Cu · Jul 23, 2026
purity under 99.5%
Tirzepatide · Mar 4, 2026
purity under 99.5%
Retatrutide · Mar 2, 2026
purity under 99.5%
5-Amino-1MQ · Feb 19, 2026
purity under 99.5%
Lab testing results
Independent results across 4 products.
Individual lab tests
Date
9/24/2026
Purity
99.9%
Quantity
50 mg → 40.4 mg
Lab
Krause Analytical
Vial
Silver label / Silver crimp / White cap
Date
9/24/2026
Purity
—
Quantity
—
Lab
Krause Analytical
Vial
No label / Silver crimp / Orange cap
Date
8/25/2026
Purity
99.9%
Quantity
30 mg → 31.9 mg
Lab
BTLabs
Vial
No label / Silver crimp / Black cap
Date
8/25/2026
Purity
99.9%
Quantity
60 mg → 81.2 mg
Lab
BTLabs
Vial
No label / Silver crimp / Green cap
Date
8/5/2026
Purity
99.9%
Quantity
50 mg → 51.3 mg
Lab
Krause Analytical
Vial
No label, Silver crimp, Clear Yellow cap
| Product | Date | Score | Purity | Quantity | Lab | COA |
|---|---|---|---|---|---|---|
| TirzepatideSilver label / Silver crimp / White cap | 9/24/2026 | 10.0 | 99.9% | 50 mg → 40.4 mg | Krause Analytical | View |
| 5-Amino-1MQNo label / Silver crimp / Orange cap | 9/24/2026 | — | — | Krause Analytical | View | |
| RetatrutideNo label / Silver crimp / Black cap | 8/25/2026 | 10.0 | 99.9% | 30 mg → 31.9 mg | BTLabs | View |
| TirzepatideNo label / Silver crimp / Green cap | 8/25/2026 | 10.0 | 99.9% | 60 mg → 81.2 mg | BTLabs | View |
| TirzepatideNo label, Silver crimp, Clear Yellow cap | 8/5/2026 | 10.0 | 99.9% | 50 mg → 51.3 mg | Krause Analytical | View |
Which Yidan Biotech products tested best
Tirzepatide and Retatrutide have the strongest record, graded A or B.
GHK-Cu and 5-Amino-1MQ graded D or E: a large share of their samples missed purity or quantity thresholds.
Buying from Yidan Biotech
If you order from Yidan Biotech, 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 Yidan Biotech's prices yet. Shipping, payment and refund terms are on their site.
The official store is www.yidanbio.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 Yidan Biotech
Create a free account to save this vendor, get alerts for new lab tests, and watch price changes.
Yidan Biotech: common questions
Is Yidan Biotech legit?
We rate lab records, not businesses. Mixed lab record: 20 independent tests, 13 of 19 lots filled to label, median purity 99.8%, 2 of 4 products graded D or E. Each result links to its original certificate in the table above.
What do Yidan Biotech reviews say?
We don't hold scored customer reviews for Yidan Biotech yet. The independent lab results on this page are the evidence we have.
Which Yidan Biotech peptides tested best?
We have graded 4 Yidan Biotech products. Tirzepatide and Retatrutide graded A or B. GHK-Cu and 5-Amino-1MQ graded D or E.
Is there a Yidan Biotech coupon code?
We don't have a verified Yidan Biotech coupon code. A discount changes the price, not what is in the vial.
Ordering from Yidan Biotech?
Mixed lab record: 20 independent tests, 13 of 19 lots filled to label, median purity 99.8%, 2 of 4 products graded D or E.