Zhengzhou Lan Yun Cosmetic Trading reviews
Zhengzhou Lan Yun Cosmetic Trading reviews: 42 independent lab tests across 6 products, with a mixed lab record.
Written by the Peptide Vendor Reviews editorial team
Is Zhengzhou Lan Yun Cosmetic Trading legit? Lab record: Mixed
How we rate- 42 independent tests
- 30 of 36 lots filled to label
- Median purity 99.8%
- 2 of 5 products graded D or E
Some of Zhengzhou Lan Yun Cosmetic Trading's products graded D or E. The shops below tested A or B for the same peptides.
Better-tested Tesamorelin
Zhengzhou Lan Yun Cosmetic Trading graded D. Shanghai ERP peptide Biotechnology's Tesamorelin graded A across 13 tests.
Buy from Shanghai ERP peptide BiotechnologyAll better-tested optionsPeptide Vendor Reviews independently tests products and verifies reviews. Public methodology, no pay-to-rank.
Better-tested options
Where Zhengzhou Lan Yun Cosmetic Trading 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.
Tesamorelin
Zhengzhou Lan Yun Cosmetic Trading: grade DRetatrutide
Zhengzhou Lan Yun Cosmetic Trading: grade DZhengzhou Lan Yun Cosmetic Trading 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 Zhengzhou Lan Yun Cosmetic Trading's site.
- IpamorelinAGREAT
- Tests
- 2
- Passed
- 100.0%
- GHK-CuBGOOD
- Tests
- 7
- Passed
- 85.7%
- TirzepatideCOKAY
- Tests
- 12
- Passed
- 75.0%
- RetatrutideDPOOR
- Tests
- 15
- Passed
- 66.7%
- TesamorelinDPOOR
- Tests
- 3
- Passed
- 66.7%
- Tests
- 3
- Passed
- —
What the testing shows
Across 36 measured samples from Zhengzhou Lan Yun Cosmetic Trading, 6 came in more than 5% under the quantity on the label (17%). Another 12 measured more than 5% over. Purity across 37 readings ran from 95.79% to 99.95%, median 99.8%. Samples span Dec 2025 to Oct 2026.
- Under label
- 6/36
- Median purity
- 99.8%
- Latest sample
- Oct 2026
more than 5% short
95.79%–99.95% range
first tested Dec 2025
Our read on Zhengzhou Lan Yun Cosmetic Trading
29 of Zhengzhou Lan Yun Cosmetic Trading's 42 graded samples passed (69%), and 100% of all samples were sent in by buyers rather than by the shop.
Results are slipping: 57% passed over the latest six months, down from 81% before.
When a sample failed, the most common reason was purity under 99.5% (6 times).
5 samples failed identity, meaning the lab could not confirm the vial held the labelled peptide.
Against the 302 shops with at least five graded tests, Zhengzhou Lan Yun Cosmetic Trading's pass rate is at or above 42% of them, and it has more tests on record than 73% of them.
When and how Zhengzhou Lan Yun Cosmetic Trading was tested
Samples per month. The darker part of each bar failed.
- Labs used
- BTLabs (20), Krause Analytical (20), Ichor Life Sciences (2)
- Who sent the samples
- buyers 100%
- Batches covered
- 20 distinct batch numbers; 6 checked for endotoxins
Why Zhengzhou Lan Yun Cosmetic Trading's failed samples failed
The 6 most recent failed tests, with the lab's reason.
Tesamorelin · Oct 7, 2026
purity under 99.5%
Retatrutide · Sep 16, 2026
purity under 99.5%
Retatrutide · Sep 7, 2026
the lab could not confirm it was the labelled peptide
Tirzepatide · Sep 7, 2026
the lab could not confirm it was the labelled peptide
Tirzepatide · Aug 6, 2026
amount in the vial more than 35% off the label
BPC-157 · Jul 13, 2026
the lab could not confirm it was the labelled peptide
Lab testing results
Independent results across 6 products.
Individual lab tests
Date
10/7/2026
Purity
98.57%
Quantity
10 mg → 11.5785 mg
Lab
Ichor Life Sciences
Vial
Silver crimp / Black cap
Date
9/16/2026
Purity
95.79%
Quantity
60 mg → 74.7147 mg
Lab
Ichor Life Sciences
Vial
No label / Silver crimp / Violet cap
Date
9/7/2026
Purity
—
Quantity
—
Lab
BTLabs
Vial
No label / Silver crimp / White cap
Date
9/7/2026
Purity
—
Quantity
—
Lab
BTLabs
Vial
No label / Silver crimp / Blue cap
Date
8/13/2026
Purity
99.9%
Quantity
60 mg → 60 mg
Lab
Krause Analytical
Vial
White label / Silver crimp / Green cap
| Product | Date | Score | Purity | Quantity | Lab | COA |
|---|---|---|---|---|---|---|
| TesamorelinSilver crimp / Black cap | 10/7/2026 | 9.9 | 98.57% | 10 mg → 11.5785 mg | Ichor Life Sciences | View |
| RetatrutideNo label / Silver crimp / Violet cap | 9/16/2026 | 9.6 | 95.79% | 60 mg → 74.7147 mg | Ichor Life Sciences | View |
| TirzepatideNo label / Silver crimp / White cap | 9/7/2026 | — | — | BTLabs | View | |
| RetatrutideNo label / Silver crimp / Blue cap | 9/7/2026 | — | — | BTLabs | View | |
| TirzepatideWhite label / Silver crimp / Green cap | 8/13/2026 | 10.0 | 99.9% | 60 mg → 60 mg | Krause Analytical | View |
Which Zhengzhou Lan Yun Cosmetic Trading products tested best
Ipamorelin and GHK-Cu have the strongest record, graded A or B.
Tirzepatide graded C.
Tesamorelin and Retatrutide graded D or E: a large share of their samples missed purity or quantity thresholds.
Buying from Zhengzhou Lan Yun Cosmetic Trading
If you order from Zhengzhou Lan Yun Cosmetic Trading, 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 Zhengzhou Lan Yun Cosmetic Trading's prices yet. Shipping, payment and refund terms are on their site.
The official store is zhengzhoulanyun.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 Zhengzhou Lan Yun Cosmetic Trading
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Zhengzhou Lan Yun Cosmetic Trading: common questions
Is Zhengzhou Lan Yun Cosmetic Trading legit?
We rate lab records, not businesses. Mixed lab record: 42 independent tests, 30 of 36 lots filled to label, median purity 99.8%, 2 of 5 products graded D or E. Each result links to its original certificate in the table above.
What do Zhengzhou Lan Yun Cosmetic Trading reviews say?
We don't hold scored customer reviews for Zhengzhou Lan Yun Cosmetic Trading yet. The independent lab results on this page are the evidence we have.
Which Zhengzhou Lan Yun Cosmetic Trading peptides tested best?
We have graded 5 Zhengzhou Lan Yun Cosmetic Trading products. Ipamorelin and GHK-Cu graded A or B. Tesamorelin and Retatrutide graded D or E.
Is there a Zhengzhou Lan Yun Cosmetic Trading coupon code?
We don't have a verified Zhengzhou Lan Yun Cosmetic Trading coupon code. A discount changes the price, not what is in the vial.
Ordering from Zhengzhou Lan Yun Cosmetic Trading?
Mixed lab record: 42 independent tests, 30 of 36 lots filled to label, median purity 99.8%, 2 of 5 products graded D or E.