Documentation
Frequently asked questions and guide to understanding our rankings.
Frequently Asked Questions
What is PeptideRankings?
PeptideRankings is a platform that aggregates and analyzes publicly available laboratory test results from Janoshik to provide unbiased rankings of peptide suppliers.
Where does the data come from?
All data is sourced from publicly available laboratory certificates issued by Janoshik. We do not perform our own testing.
How often are rankings updated?
Rankings are updated automatically as new certificates are published on the Janoshik website.
What do the scores mean?
Scores range from 0-100 and are calculated based on six metrics: quality (purity), volume (number of tests), accuracy (stated vs actual quantity), consistency, recency, and testing completeness.
Why is a supplier not showing in rankings?
Suppliers must have at least 5 laboratory certificates from Janoshik to appear in rankings. Suppliers with fewer tests may not have enough data for meaningful comparison.
Is this affiliated with Janoshik?
No, PeptideRankings is an independent platform. We simply aggregate and analyze publicly available data from Janoshik certificates.
How can I contact you?
Use the contact form on our About page to send us a message. We appreciate any feedback or questions.
Understanding the Metrics
Purity
The purity percentage indicates how pure the peptide is, as determined by HPLC (High-Performance Liquid Chromatography) analysis. Higher purity is generally better, with 98%+ considered excellent.
Accuracy
Accuracy measures how closely the stated quantity matches the tested quantity. For example, if you order 10mg and the test shows 10mg, accuracy is 100%. This is important for proper dosing.
Consistency
Consistency measures how similar results are across multiple tests. A supplier with high consistency produces reliable results batch after batch.
Endotoxin
Endotoxin testing measures the presence of bacterial toxins. Lower endotoxin levels are better, especially for research applications where purity is critical.
Tips for Using Rankings
- Look for suppliers with consistent results across multiple tests
- Check the "Last Test" date - recent results are more relevant
- Consider your priorities - purity vs accuracy vs consistency
- Filter by specific peptides you're interested in
- Compare multiple suppliers before making a decision