Is Peptronix Bio Ptb Legit
Is Peptronix Bio Ptb Legit? 20 independent lab tests across 3 products, with a mixed lab record.
Written by the Peptide Vendor Reviews editorial team
Lab record: Mixed
How we rate- 20 independent tests
- 16 of 20 lots filled to label
- Median purity 99.89%
- All 3 products graded C or better
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20 independent COAs · not paid-to-rank · 4 of 20 lots under label
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Peptronix Bio PTB 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 Peptronix Bio PTB's site.
- GHK-CuAGREAT
- Tests
- 2
- Passed
- 100.0%
- RetatrutideBGOOD
- Tests
- 11
- Passed
- 81.8%
- TirzepatideCOKAY
- Tests
- 7
- Passed
- 71.4%
What the testing shows
Across 20 measured samples from Peptronix Bio PTB, 4 came in more than 5% under the quantity on the label (20%). Another 7 measured more than 5% over. Purity across 20 readings ran from 57.4% to 99.95%, median 99.89%. Samples span Jul 2025 to Sep 2026.
- Under label
- 4/20
- Median purity
- 99.89%
- Latest sample
- Sep 2026
- Ships from
- China
more than 5% short
57.4%–99.95% range
first tested Jul 2025
per vendor listing
Our read on Peptronix Bio PTB
16 of Peptronix Bio PTB's 20 graded samples passed (80%), and 100% of all samples were sent in by buyers rather than by the shop.
Results are slipping: 67% passed over the latest six months, down from 86% before.
When a sample failed, the most common reason was purity under 99.5% (4 times).
Against the 302 shops with at least five graded tests, Peptronix Bio PTB's pass rate is at or above 70% of them, and it has more tests on record than 51% of them.
When and how Peptronix Bio PTB was tested
Samples per month. The darker part of each bar failed.
- Labs used
- Krause Analytical (15), BTLabs (3), Harrens Lab (1), Janoshik (1)
- Who sent the samples
- buyers 100%
- Batches covered
- 6 distinct batch numbers; 1 checked for endotoxins
Why Peptronix Bio PTB's failed samples failed
The 4 most recent failed tests, with the lab's reason.
Tirzepatide · Sep 24, 2026
purity under 99.5%; amount in the vial more than 35% off the label
Retatrutide · Jun 5, 2026
purity under 99.5%
Tirzepatide · Feb 18, 2026
purity under 99.5%
Retatrutide · Aug 5, 2025
purity under 99.5%
Lab testing results
Independent results across 3 products.
Individual lab tests
Date
9/24/2026
Purity
57.4%
Quantity
30 mg → 17.23 mg
Lab
Harrens Lab
Vial
No label / Silver crimp / Black cap
Date
9/8/2026
Purity
99.9%
Quantity
20 mg → 24.3 mg
Lab
BTLabs
Vial
dark blue / silver crimp
Date
7/20/2026
Purity
99.9%
Quantity
50 mg → 40.3 mg
Lab
Krause Analytical
Vial
Silver label / Silver crimp / Blue cap
Date
6/6/2026
Purity
99.7%
Quantity
20 mg → 22.4 mg
Lab
BTLabs
Vial
White label / Silver crimp / Violet cap
Date
6/5/2026
Purity
93.9%
Quantity
20 mg → 18.6 mg
Lab
Krause Analytical
Vial
No label / Silver crimp / Violet cap
| Product | Date | Score | Purity | Quantity | Lab | COA |
|---|---|---|---|---|---|---|
| TirzepatideNo label / Silver crimp / Black cap | 9/24/2026 | 5.7 | 57.4% | 30 mg → 17.23 mg | Harrens Lab | View |
| Retatrutidedark blue / silver crimp | 9/8/2026 | 10.0 | 99.9% | 20 mg → 24.3 mg | BTLabs | View |
| GHK-CuSilver label / Silver crimp / Blue cap | 7/20/2026 | 10.0 | 99.9% | 50 mg → 40.3 mg | Krause Analytical | View |
| RetatrutideWhite label / Silver crimp / Violet cap | 6/6/2026 | 10.0 | 99.7% | 20 mg → 22.4 mg | BTLabs | View |
| RetatrutideNo label / Silver crimp / Violet cap | 6/5/2026 | 9.4 | 93.9% | 20 mg → 18.6 mg | Krause Analytical | View |
Which Peptronix Bio PTB products tested best
GHK-Cu and Retatrutide have the strongest record, graded A or B.
Tirzepatide graded C.
Buying from Peptronix Bio PTB
If you order from Peptronix Bio PTB, start with the graded products in the table: each one links straight to the shop.
We don't track Peptronix Bio PTB's prices yet. Shipping, payment and refund terms are on their site.
The official store is peptronix.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 Peptronix Bio PTB
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Peptronix Bio PTB: common questions
Is Peptronix Bio PTB legit?
We rate lab records, not businesses. Mixed lab record: 20 independent tests, 16 of 20 lots filled to label, median purity 99.89%, all 3 products graded C or better. Each result links to its original certificate in the table above.
What do Peptronix Bio PTB reviews say?
We don't hold scored customer reviews for Peptronix Bio PTB yet. The independent lab results on this page are the evidence we have.
Which Peptronix Bio PTB peptides tested best?
We have graded 3 Peptronix Bio PTB products. GHK-Cu and Retatrutide graded A or B.
Is there a Peptronix Bio PTB coupon code?
We don't have a verified Peptronix Bio PTB coupon code. A discount changes the price, not what is in the vial.
Where does Peptronix Bio PTB ship from?
Public listings place Peptronix Bio PTB's shipping origin in China. Check the shop's own shipping page before ordering, as origin can change.
Ordering from Peptronix Bio PTB?
Mixed lab record: 20 independent tests, 16 of 20 lots filled to label, median purity 99.89%, all 3 products graded C or better.
About Peptronix Bio PTB
Shenzhen Peptronix Biotechnology Co., LTD
Contact
- China
- peptronix.com