Question 1

Who tests Peptara Labs peptides?

Accepted Answer

Every batch is tested by Titreon Analytical, an independent third-party laboratory whose quality system is aligned to ISO/IEC 17025:2017. Select batches also carry an independent bacterial endotoxin report from Janoshik. Peptara does not run its own purity testing.

Question 2

What does each certificate confirm?

Accepted Answer

Identity by HPLC retention-time matching and LC-MS, chromatographic purity by HPLC against a not-less-than 95.0 percent release criterion, net peptide content, sterility, bacterial endotoxin, heavy metals, and a fentanyl immunoassay screen.

Question 3

Are these certificates per batch?

Accepted Answer

Each certificate shown is from a representative recent batch of that peptide. If you want the certificate that matches the exact lot you received, message us on WhatsApp with your lot number and we will send it.

Question 4

Do you screen for fentanyl and heavy metals?

Accepted Answer

Yes. Every full-panel certificate includes a fentanyl immunoassay screen and elemental impurity testing for arsenic, cadmium, chromium, mercury, and lead. All returned Not Detected on the published batches.

Question 5

Can I verify the exact lot I received?

Accepted Answer

Yes. Message us on WhatsApp with the lot number printed on your vial and we will send the matching certificate. The certificate number on each report can also be referenced with Titreon Analytical.

Question 6

Does Peptara Labs test with Janoshik?

Accepted Answer

Yes. Our Retatrutide, Tirzepatide, BPC-157, and GHK-Cu batches carry an independent bacterial endotoxin report issued by Janoshik, in addition to the full Titreon Analytical certificate. Each Janoshik report is linked on its certificate card and can be verified at janoshik.com/verify using the unique key printed on the report.

Question 7

What is a Janoshik report and how do I verify it?

Accepted Answer

Janoshik is an independent analytical laboratory widely used for third-party peptide testing. Each Janoshik test report lists the sample, batch, and result, plus a unique verification key. Enter that key at janoshik.com/verify to confirm the report is genuine and has not been altered.

Question 8

What is the bacterial endotoxin level of Peptara Labs peptides?

Accepted Answer

Bacterial endotoxin is measured per batch by Janoshik, independently of the Titreon Analytical panel. The exact result for each batch is printed on its Janoshik report, which is linked on the certificate card. Message us with your lot number and we will send the report that matches your vial.

Certificates of analysis, third-party lab tested. Every batch, on the record.

Browse every certificate of analysis

Frequently asked questions

Every vial ships with a lot you can verify.