AssayIndex
Reference

Acceptance specifications

The index applies its own acceptance specification by compound class. Every threshold is published with its reasoning and its observed failure rate. None of them is a regulatory limit and none of them is a safety threshold — a specification is a line this site drew, and these pages exist so that any PASS or FAIL chip anywhere on the site can be traced back to the decision behind it.

9 classes66 compounds6,722 records assessed
ClassCompoundsRecordsPurity ≥Water ≤Counter-ion ≤Endotoxin ≤Mass ±Observed median
Incretin analogues and co-agonists122,39997.08.012.05.01598.66
Metabolic and mitochondrial peptides535698.09.012.05.01599.26
Tissue-repair and immunomodulatory peptides101,22998.010.012.05.01599.26
Growth-hormone axis peptides131,10898.09.012.05.01599.00
Melanocortin-receptor peptides550998.58.010.05.01599.28
Hypothalamic and posterior-pituitary hormones513498.58.010.05.01599.30
Neuroactive and cognitive peptides540098.512.010.05.01599.25
Short bioregulator peptides623299.012.010.05.02099.06
Non-peptide adjuncts535598.510.012.05.01099.17

Incretin analogues and co-agonists

GLP-1, GIP and glucagon receptor agonists, including the lipidated long-acting analogues and the dual and triple co-agonists.

purity spec97.0
compounds12
ppm±15

Growth-hormone axis peptides

GHRH analogues, growth-hormone secretagogues, IGF-1 variants and conjugates.

purity spec98.0
compounds13
ppm±15

Short bioregulator peptides

Di-, tri- and tetrapeptide bioregulators, plus the thiol tripeptide glutathione and the dipeptide carnosine.

purity spec99.0
compounds6
ppm±20

Non-peptide adjuncts

Small molecules and nucleotide cofactors submitted alongside peptides. Different specification, different methods, same index.

purity spec98.5
compounds5
ppm±10