DOT Drug Testing in Spartanburg, SC
MCW Laboratory is Spartanburg's SCDOT-certified DOT drug testing site — federally compliant pre-employment, random, post-accident, and return-to-duty testing for CDL drivers and transportation employers under 49 CFR Part 40.
Spartanburg's FMCSA-Compliant DOT Drug Testing Site
MCW Laboratory provides DOT drug testing in Spartanburg, SC for CDL drivers, fleet operators, and safety-sensitive transportation employers. As a SCDOT-certified, CLIA-waived collection site, we follow all 49 CFR Part 40 protocols required by FMCSA, FAA, FTA, FRA, and PHMSA. Walk-ins welcome — same-day collection available Monday through Friday.
DOT-Regulated Testing Programs
Pre-Employment DOT Drug Testing
Required before a CDL driver performs any safety-sensitive function. We collect and process specimens quickly so you can get drivers on the road without delay.
Random DOT Drug Testing
Unannounced random testing required by FMCSA for covered employees. We work with your consortium or TPA to fulfill random selection requirements on short notice.
Post-Accident DOT Drug Testing
Required following qualifying accidents involving commercial vehicles. We provide rapid collection to meet the strict post-accident testing windows under 49 CFR Part 40.
Return-to-Duty DOT Drug Testing
Required before a driver who violated DOT drug or alcohol rules returns to safety-sensitive duties. Includes follow-up testing program coordination.
Reasonable Suspicion Testing
Supervisor-directed testing when there is reasonable cause to believe a driver is impaired. We provide prompt collection and documentation to support your compliance records.
Follow-Up DOT Drug Testing
Unannounced follow-up testing required after return-to-duty. We coordinate with your SAP and TPA to fulfill the minimum 6-test follow-up schedule.
Certified for Federal DOT Compliance
MCW Laboratory meets every federal requirement for DOT drug and alcohol testing. Our collection site is SCDOT-certified, our collectors are trained under 49 CFR Part 40, and all specimens are sent to SAMHSA-certified laboratories for analysis. MRO review is included on all non-negative results.
Fast Results for Fleet Compliance
Most negative DOT drug test results are reported within 24 to 48 hours of collection.
Non-negative results are reviewed by a Medical Review Officer before final reporting.
No appointment required. Walk-in collection available Monday–Friday during business hours.
Schedule DOT Drug Testing in Spartanburg
Call, email, or use our contact form to schedule DOT drug testing for your drivers or fleet. Same-day walk-in collection is available Monday through Friday.