What we publish
Detection windows are typical ranges drawn from assay documentation, federal workplace testing guidance and peer-reviewed pharmacokinetic literature. Cutoffs reflect the standard immunoassay screen and confirmation thresholds used by certified laboratories.
How we source
- Federal program guidance — SAMHSA and DOT 49 CFR Part 40.
- Assay and labeling documentation — FDA 510(k) summaries and DailyMed.
- Peer-reviewed literature — indexed on PubMed, including the cross-reactivity review by Brahm et al. (Mayo Clinic Proceedings, 2008).
- Public-health references — CDC and NIDA.
What we don't do
- We don't fabricate reviewer credentials or testimonials.
- We don't guarantee a test outcome or provide medical or legal advice.
- We don't claim any method reliably defeats a laboratory test.
Corrections
Spotted an error? Reach us via the about page and we'll review it against the cited sources. Every reference page shows its last-reviewed date.