Guides
Lab reports and verification
A lab report answers two questions. Is it the right molecule, and how much of the vial is that molecule. Every pepuro batch has one, from Janoshik Analytical, published with the original certificate. These guides show you how to read it.
Mass first, then purity
Mass spectrometry tells you the peptide is the one on the label. HPLC tells you what fraction of the powder is that peptide. Read them in that order. A 99% figure for the wrong molecule is worth nothing, and a report that skips the mass result has skipped the hard part.
The report has to reach the vial
A PDF on a product page proves a sample from some batch was tested once. It does not tell you which batch your vial came from. Every pepuro vial has a QR code that opens the report for its own batch, and any batch code can be typed into the tracking page. Most suppliers cannot offer that; the comparison pages show which ones.
Who signed it
An independent lab has no stake in the result. An unnamed one might be the supplier. Every report we publish names Janoshik Analytical and links the certificate exactly as the lab issued it.
Common questions
What should a peptide lab report show?+
Identity by mass spectrometry, purity by HPLC, the batch number, the test date and the lab's name. Missing any one of those and there is a hole where the proof should be.
How do I check a pepuro vial?+
Scan the QR sticker, or type the batch code on the tracking page. You get purity, mass, endotoxin and appearance results, the lab that ran them, and the original certificate.
What purity does pepuro ship?+
99% or higher by HPLC. A batch that comes back below that does not ship.
Have a pepuro vial? Read its report now.
Look up a vialGuides
- How per-vial QR code tracking worksEvery pepuro vial carries a QR code that resolves to its own third-party lab report. Here's how per-vial tracking works and why it beats a generic batch PDF.
- How to read a peptide lab reportWhat every number on a peptide certificate of analysis actually means, what to ignore, and how to spot a fake report.