Research Library

Original peptide testing data and studies from our community. These reports are educational and are not intended to inform decisions about human use of any product.

Reading a COA

What a certificate of analysis actually tells you, what it doesn't, who ran the test, and how to read the three numbers that matter, with real reports.

A COA answers three separate questions: is it the right molecule, how intact is the peptide, and how much is actually in the vial. Most people read only purity, and purity means less than they think. We walk through real redacted lab reports, including three different failures, explain first vs second vs third party testing, and show how to verify a report and spot a fake.

coa testing hplc mass spectrometry verification

Rotate Your Sites

What lipohypertrophy is, why it quietly wrecks dosing consistency, and what the injection-technique literature actually says about rotating sites.

Repeatedly injecting the same patch of subcutaneous tissue builds lipohypertrophy: firm, poorly-perfused lumps that absorb erratically. The insulin literature is unambiguous that correct site rotation prevents it. Here is the evidence and the technique.

injection technique lipohypertrophy rotation subcutaneous

Only 28 Days?

A 120-day stability assessment of Hospira bacteriostatic water under three storage conditions.

USP <797> directs that multi-dose containers be discarded within 28 days of first puncture. We commissioned third-party testing (Janoshik Analytical) of benzyl alcohol concentration in Hospira BAC water at days 0, 30, 60, 90, and 120 across three conditions. All three samples held within the literature-supported preservative range through day 120.

bac water stability preservatives