Hangzhou Mandy Biotechnology reviews
Hangzhou Mandy Biotechnology reviews: 38 independent lab tests across 4 products, with a mixed lab record.
Written by the Peptide Vendor Reviews editorial team
Is Hangzhou Mandy Biotechnology legit? Lab record: Mixed
How we rate- 38 independent tests
- 29 of 37 lots filled to label
- Median purity 99.75%
- 1 of 4 products graded D or E
Some of Hangzhou Mandy Biotechnology's products graded D or E. The shops below tested A or B for the same peptides.
Better-tested BPC-157
Hangzhou Mandy Biotechnology graded D. Zenith Jove Peptide ZJ's BPC-157 graded A across 10 tests.
Buy from Zenith Jove Peptide ZJAll better-tested optionsPeptide Vendor Reviews independently tests products and verifies reviews. Public methodology, no pay-to-rank.
Better-tested options
Where Hangzhou Mandy Biotechnology 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.
BPC-157
Hangzhou Mandy Biotechnology: grade DHangzhou Mandy Biotechnology 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 Hangzhou Mandy Biotechnology's site.
- GHK-CuBGOOD
- Tests
- 6
- Passed
- 83.3%
- RetatrutideCOKAY
- Tests
- 14
- Passed
- 71.4%
- TirzepatideCOKAY
- Tests
- 13
- Passed
- 75.0%
- BPC-157DPOOR
- Tests
- 5
- Passed
- 60.0%
What the testing shows
Across 37 measured samples from Hangzhou Mandy Biotechnology, 8 came in more than 5% under the quantity on the label (22%). Another 14 measured more than 5% over. Purity across 37 readings ran from 93.01% to 99.95%, median 99.75%. Samples span Nov 2025 to Aug 2026.
- Under label
- 8/37
- Median purity
- 99.75%
- Latest sample
- Aug 2026
more than 5% short
93.01%–99.95% range
first tested Nov 2025
Our read on Hangzhou Mandy Biotechnology
27 of Hangzhou Mandy Biotechnology's 37 graded samples passed (73%), and 100% of all samples were sent in by buyers rather than by the shop.
Results are improving: 83% passed over the latest six months, up from 57% before.
When a sample failed, the most common reason was purity under 99.5% (9 times).
Against the 302 shops with at least five graded tests, Hangzhou Mandy Biotechnology's pass rate is at or above 52% of them, and it has more tests on record than 71% of them.
When and how Hangzhou Mandy Biotechnology was tested
Samples per month. The darker part of each bar failed.
- Labs used
- Krause Analytical (26), BTLabs (12)
- Who sent the samples
- buyers 100%
- Batches covered
- 11 distinct batch numbers; 6 checked for endotoxins
Why Hangzhou Mandy Biotechnology's failed samples failed
The 6 most recent failed tests, with the lab's reason.
BPC-157 · Jun 17, 2026
purity under 99.5%
Tirzepatide · Mar 4, 2026
purity under 99.5%
Retatrutide · Mar 3, 2026
purity under 99.5%
Tirzepatide · Feb 26, 2026
purity under 99.5%
GHK-Cu · Feb 4, 2026
purity under 99.5%
Retatrutide · Jan 22, 2026
amount in the vial more than 35% off the label
Lab testing results
Independent results across 4 products.
Individual lab tests
Date
8/5/2026
Purity
99.9%
Quantity
5 mg → 4.18 mg
Lab
Krause Analytical
Vial
No label / Silver crimp / Black cap
Date
8/5/2026
Purity
99.9%
Quantity
20 mg → 18.5 mg
Lab
Krause Analytical
Vial
No label / Silver crimp / Blue cap
Date
6/22/2026
Purity
99.9%
Quantity
30 mg → 27.4 mg
Lab
Krause Analytical
Vial
Clear label / Silver crimp / Black cap
Date
6/17/2026
Purity
99.7%
Quantity
20 mg → 22.9 mg
Lab
BTLabs
Vial
No label / Silver crimp / Blue cap
Date
6/17/2026
Purity
99.4%
Quantity
10 mg → 10 mg
Lab
Krause Analytical
Vial
Clear label / Silver crimp / Blue cap
| Product | Date | Score | Purity | Quantity | Lab | COA |
|---|---|---|---|---|---|---|
| BPC-157No label / Silver crimp / Black cap | 8/5/2026 | 10.0 | 99.9% | 5 mg → 4.18 mg | Krause Analytical | View |
| RetatrutideNo label / Silver crimp / Blue cap | 8/5/2026 | 10.0 | 99.9% | 20 mg → 18.5 mg | Krause Analytical | View |
| RetatrutideClear label / Silver crimp / Black cap | 6/22/2026 | 10.0 | 99.9% | 30 mg → 27.4 mg | Krause Analytical | View |
| TirzepatideNo label / Silver crimp / Blue cap | 6/17/2026 | 10.0 | 99.7% | 20 mg → 22.9 mg | BTLabs | View |
| BPC-157Clear label / Silver crimp / Blue cap | 6/17/2026 | 9.9 | 99.4% | 10 mg → 10 mg | Krause Analytical | View |
Which Hangzhou Mandy Biotechnology products tested best
GHK-Cu has the strongest record, graded A or B.
Tirzepatide and Retatrutide graded C.
BPC-157 graded D or E: a large share of its samples missed purity or quantity thresholds.
Buying from Hangzhou Mandy Biotechnology
If you order from Hangzhou Mandy Biotechnology, 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 Hangzhou Mandy Biotechnology's prices yet. Shipping, payment and refund terms are on their site.
The official store is www.mandybio.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 Hangzhou Mandy Biotechnology
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Hangzhou Mandy Biotechnology: common questions
Is Hangzhou Mandy Biotechnology legit?
We rate lab records, not businesses. Mixed lab record: 38 independent tests, 29 of 37 lots filled to label, median purity 99.75%, 1 of 4 products graded D or E. Each result links to its original certificate in the table above.
What do Hangzhou Mandy Biotechnology reviews say?
We don't hold scored customer reviews for Hangzhou Mandy Biotechnology yet. The independent lab results on this page are the evidence we have.
Which Hangzhou Mandy Biotechnology peptides tested best?
We have graded 4 Hangzhou Mandy Biotechnology products. GHK-Cu graded A or B. BPC-157 graded D or E.
Is there a Hangzhou Mandy Biotechnology coupon code?
We don't have a verified Hangzhou Mandy Biotechnology coupon code. A discount changes the price, not what is in the vial.
Ordering from Hangzhou Mandy Biotechnology?
Mixed lab record: 38 independent tests, 29 of 37 lots filled to label, median purity 99.75%, 1 of 4 products graded D or E.