Results You Can Defend.
Turnaround You Can Count On.
Urine cups, oral swabs, and hair follicles move through immunoassay screens and GC-MS confirmations before most employers finish their morning coffee. Chain-of-custody documentation that holds up under cross-examination — every time.
"We onboarded 67 warehouse associates in a single week. Every negative result came back before the afternoon shift briefing. I've never had a lab make my job easier."
Same-Day Negative Results
Immunoassay screens completed within 2–4 hours of specimen receipt. Negative results reported electronically before your shift begins.
High-Volume Onboarding
Batch processing for 50+ hires per week. Dedicated account manager coordinates scheduling across all your collection sites.
Integrated MRO Review
Medical Review Officer evaluation included on every non-negative. No third-party coordination — one lab, end-to-end.
Real-Time Dashboard
Track specimen status, pending results, and 90-day trend reports from a single employer portal. Export-ready for HR audits.
MRO Review Speed
"We manage DOT-regulated driver pools for fourteen motor carriers. Assay's MRO review comes back faster than any lab I've worked with in twenty years. The CCF documentation is flawless — I've never had a carrier ask for a correction."
"I subpoenaed the lab records in a wrongful termination case. Every link in the chain was documented — from the collector's credential to the GC-MS instrument printout. The opposing counsel had nothing. That's what Assay's documentation does in court."
Chain of Custody That Holds Up.
Every specimen follows a six-link documentation chain from collection to result. Each link is timestamped, credentialed, and digitally preserved. If it's ever challenged, we testify.
Download Our Chain-of-Custody Guide
32 pages of documentation standards, court preparation protocols, and specimen handling procedures used by our certified collectors.
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"We added Assay to our collection site network six months ago. The digital CCF alone cut our documentation errors by 80%. The courier pickup is clockwork — I've never had a specimen rejected."
340+ Partner Collection Sites
Nationwide network of SAMHSA-certified collectors. Same-day scheduling for urgent pre-employment and post-accident testing.
Mobile Collector Dispatch
On-site collection for remote facilities, construction sites, and fleet yards. Available within 90 minutes in metro areas.
Digital Chain of Custody
QR-coded CCF eliminates paper errors. Collector scans, specimen is logged, courier is dispatched — all without a fax machine.
Certified Cold-Chain Courier
Temperature-monitored transport with GPS tracking. Specimens arrive in-specification, every time.
Everything Ready Before You Arrive.
Tell us about your program and we'll have your account configured, your collection sites mapped, and your first order ready before end of business.