Shanghai Leader Peptide Biotechnology reviews
Shanghai Leader Peptide Biotechnology reviews: 83 independent lab tests across 8 products, with a mixed lab record.
Written by the Peptide Vendor Reviews editorial team
Is Shanghai Leader Peptide Biotechnology legit? Lab record: Mixed
How we rate- 83 independent tests
- 56 of 71 lots filled to label
- Median purity 99.84%
- 3 of 8 products graded D or E
Some of Shanghai Leader Peptide Biotechnology's products graded D or E. The shops below tested A or B for the same peptides.
Better-tested Tesamorelin
Shanghai Leader Peptide Biotechnology graded E. 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 Shanghai Leader Peptide 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.
Tesamorelin
Shanghai Leader Peptide Biotechnology: grade ECagrilintide
Shanghai Leader Peptide Biotechnology: grade ERetatrutide
Shanghai Leader Peptide Biotechnology: grade DShanghai Leader Peptide 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 Shanghai Leader Peptide Biotechnology's site.
- GHK-CuAGREAT
- Tests
- 12
- Passed
- 90.9%
- BPC-157AGREAT
- Tests
- 4
- Passed
- 100.0%
- IpamorelinAGREAT
- Tests
- 3
- Passed
- 100.0%
- NAD+AGREAT
- Tests
- 3
- Passed
- 100.0%
- TirzepatideBGOOD
- Tests
- 18
- Passed
- 82.3%
- RetatrutideDPOOR
- Tests
- 30
- Passed
- 67.9%
- TesamorelinEBAD
- Tests
- 10
- Passed
- 50.0%
- CagrilintideEBAD
- Tests
- 3
- Passed
- 33.3%
What the testing shows
Across 71 measured samples from Shanghai Leader Peptide Biotechnology, 15 came in more than 5% under the quantity on the label (21%). Another 40 measured more than 5% over. Purity across 72 readings ran from 29.3% to 99.99%, median 99.84%. Samples span Dec 2025 to Oct 2026.
- Under label
- 15/71
- Median purity
- 99.84%
- Latest sample
- Oct 2026
- Ships from
- China
more than 5% short
29.3%–99.99% range
first tested Dec 2025
per vendor listing
Our read on Shanghai Leader Peptide Biotechnology
58 of Shanghai Leader Peptide Biotechnology's 78 graded samples passed (74%), and 100% of all samples were sent in by buyers rather than by the shop.
The pass rate has held steady: 74% over the latest six months against 74% before.
When a sample failed, the most common reason was purity under 99.5% (11 times).
6 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, Shanghai Leader Peptide Biotechnology's pass rate is at or above 58% of them, and it has more tests on record than 88% of them.
When and how Shanghai Leader Peptide Biotechnology was tested
Samples per month. The darker part of each bar failed.
- Labs used
- Krause Analytical (47), BTLabs (32), PharmLabs (2), Harrens Lab (1)
- Who sent the samples
- buyers 100%
- Batches covered
- 38 distinct batch numbers; 8 checked for endotoxins
Why Shanghai Leader Peptide Biotechnology's failed samples failed
The 6 most recent failed tests, with the lab's reason.
Tirzepatide · Sep 25, 2026
purity under 99.5%; amount in the vial more than 35% off the label
Tesamorelin · Sep 21, 2026
purity under 99.5%; amount in the vial more than 35% off the label
Retatrutide · Sep 9, 2026
purity under 99.5%; amount in the vial more than 35% off the label
Tirzepatide · Aug 25, 2026
the lab could not confirm it was the labelled peptide
Retatrutide · Jul 20, 2026
purity under 99.5%
Retatrutide · May 6, 2026
the lab could not confirm it was the labelled peptide
Lab testing results
Independent results across 8 products.
Individual lab tests
Date
10/6/2026
Purity
99.9%
Quantity
30 mg → 31.6 mg
Lab
BTLabs
Vial
No label / Silver crimp / Black cap
Date
9/25/2026
Purity
29.3%
Quantity
20 mg → 5.86 mg
Lab
Harrens Lab
Vial
No label / Silver crimp / White cap
Date
9/21/2026
Purity
96.04%
Quantity
20 mg → 10.57 mg
Lab
Ichor Life Sciences
Vial
No label / Silver crimp / Violet cap
Date
9/20/2026
Purity
99.79%
Quantity
30 mg → 33.71 mg
Lab
PharmLabs
Vial
No label / Silver crimp / Black cap
Date
9/20/2026
Purity
99.99%
Quantity
30 mg → 31.6 mg
Lab
PharmLabs
Vial
No label / Silver crimp / Black cap
| Product | Date | Score | Purity | Quantity | Lab | COA |
|---|---|---|---|---|---|---|
| TirzepatideNo label / Silver crimp / Black cap | 10/6/2026 | 10.0 | 99.9% | 30 mg → 31.6 mg | BTLabs | View |
| TirzepatideNo label / Silver crimp / White cap | 9/25/2026 | 2.9 | 29.3% | 20 mg → 5.86 mg | Harrens Lab | View |
| TesamorelinNo label / Silver crimp / Violet cap | 9/21/2026 | 9.6 | 96.04% | 20 mg → 10.57 mg | Ichor Life Sciences | View |
| RetatrutideNo label / Silver crimp / Black cap | 9/20/2026 | 10.0 | 99.79% | 30 mg → 33.71 mg | PharmLabs | View |
| TirzepatideNo label / Silver crimp / Black cap | 9/20/2026 | 10.0 | 99.99% | 30 mg → 31.6 mg | PharmLabs | View |
Which Shanghai Leader Peptide Biotechnology products tested best
Ipamorelin, NAD+, BPC-157, GHK-Cu and Tirzepatide have the strongest record, graded A or B.
Retatrutide, Tesamorelin and Cagrilintide graded D or E: a large share of their samples missed purity or quantity thresholds.
Buying from Shanghai Leader Peptide Biotechnology
If you order from Shanghai Leader Peptide 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 Shanghai Leader Peptide Biotechnology's prices yet. Shipping, payment and refund terms are on their site.
The official store is www.leaderpeptide.com/ Whatsapp +86 182 3675 8133. 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 Shanghai Leader Peptide Biotechnology
Create a free account to save this vendor, get alerts for new lab tests, and watch price changes.
Shanghai Leader Peptide Biotechnology: common questions
Is Shanghai Leader Peptide Biotechnology legit?
We rate lab records, not businesses. Mixed lab record: 83 independent tests, 56 of 71 lots filled to label, median purity 99.84%, 3 of 8 products graded D or E. Each result links to its original certificate in the table above.
What do Shanghai Leader Peptide Biotechnology reviews say?
We don't hold scored customer reviews for Shanghai Leader Peptide Biotechnology yet. The independent lab results on this page are the evidence we have.
Which Shanghai Leader Peptide Biotechnology peptides tested best?
We have graded 8 Shanghai Leader Peptide Biotechnology products. Ipamorelin, NAD+, BPC-157, GHK-Cu and Tirzepatide graded A or B. Retatrutide, Tesamorelin and Cagrilintide graded D or E.
Is there a Shanghai Leader Peptide Biotechnology coupon code?
We don't have a verified Shanghai Leader Peptide Biotechnology coupon code. A discount changes the price, not what is in the vial.
Where does Shanghai Leader Peptide Biotechnology ship from?
Public listings place Shanghai Leader Peptide Biotechnology's shipping origin in China. Check the shop's own shipping page before ordering, as origin can change.
Ordering from Shanghai Leader Peptide Biotechnology?
Mixed lab record: 83 independent tests, 56 of 71 lots filled to label, median purity 99.84%, 3 of 8 products graded D or E.