DOT Follow-Up (Quest)
$85.00
DOT follow-up urine drug test through Quest Diagnostics for return-to-duty compliance. Required under 49 CFR Part 40 for employees returning after a DOT violation.
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The DOT Follow-Up test through Quest Diagnostics satisfies the mandatory follow-up testing requirements under 49 CFR Part 40 for safety-sensitive employees who have returned to duty after a substance use violation. Follow-up tests must be unannounced and follow a schedule determined by a Substance Abuse Professional (SAP).
DOT-Required Substances
- Marijuana (THC)
- Cocaine
- Opioids
- Amphetamines
- PCP
Compliance Requirements
- Minimum 6 tests in first 12 months after return to duty
- Unannounced and unpredictable scheduling required
- SAP directs testing frequency and duration
- Covers up to 5 years per DOT regulations
Lab Partner: Quest Diagnostics | Compliance: 49 CFR Part 40 | Results: 1-3 business days
Frequently asked questions
Negative urine and instant test results are typically available within 24 hours. Hair test results are delivered within 5–7 business days through USDTL or Quest/Labcorp. Positive results may require additional MRO confirmation and can take 48–72 hours. All results are delivered to Email.
Yes. All testing is 100% confidential and HIPAA compliant. Results are delivered exclusively to the ordering party through Email, our secure encrypted results portal. We do not share results with any third party without your authorization.
Yes. We offer employer programs including pre-employment testing, random testing pools, DOT consortium enrollment, and post-accident programs. Contact us at 615-332-8838 to discuss volume pricing and program setup.
Instant tests through the Quest ERO (Electronic Results Online) network deliver results at the collection site on the same day. They are available at Quest PSC sites and are ideal for situations where same-day decisions are needed. Negative results are available immediately; any non-negative results are confirmed by the lab.
Yes. We offer DOT-compliant urine drug testing that meets all requirements under 49 CFR Part 40 for FMCSA, FAA, FRA, FTA, PHMSA, and USCG regulated employers. DOT testing includes MRO review and is available through both Quest Diagnostics and Labcorp.
Urine tests detect recent drug use within the past 1–5 days for most substances. Hair tests detect use over a 90-day window and cannot be defeated by short-term abstinence. Hair testing through USDTL is the gold standard for pre-employment, probation, and custody applications. Urine testing via Quest and Labcorp is the standard for DOT compliance.
