Non negative drug test
Understanding Non Negative Drug Test Results and Their Implications
A non negative drug test indicates the initial screen detected possible drug presence, requiring confirmation by a certified Medical Review Officer. This result is not a final positive but signals further analysis is needed. AMH Nationwide routes collections through five national labs with expert review. Call (877) 731-6362.
What does a non negative drug test mean?
A non negative drug test means the initial screening detected a potential drug or metabolite but is not yet confirmed as positive. It is an inconclusive result that requires further confirmation testing by a certified Medical Review Officer (MRO). This step ensures accuracy before any final result is reported.
How is a non negative drug screen confirmed?
When a drug screen returns non negative, the specimen is sent for confirmatory testing using more specific methods such as gas chromatography-mass spectrometry (GC-MS) or liquid chromatography-tandem mass spectrometry (LC-MS/MS). The MRO reviews the confirmatory result alongside any medical explanations before finalizing the report.
Is testing negative for a drug test good?
Testing negative means no drugs or metabolites were detected above cutoff levels. This is typically the desired outcome for employers, courts, and individuals. However, a negative result does not guarantee absence of drug use outside the test’s detection window or substances not included in the panel.
| Result Type | Meaning |
|---|---|
| Negative | No drug detected above cutoff; test passed |
| Non Negative | Initial screen positive; confirmation pending |
| Positive | Confirmed presence of drug or metabolite |
| Invalid | Test could not be completed or was compromised |
Who orders non negative drug tests and why?
Non negative drug tests arise in various contexts such as employer pre-employment screening, probation and court-mandated testing, and individual health or legal concerns. AMH Nationwide facilitates testing for all these purposes by directing clients to one of five national lab networks for collection and analysis.
Need Clarification on Your Non Negative Drug Test?
Call (877) 731-6362 to speak with AMH Nationwide about your drug test results and next steps. Our expert team can guide you through the process.
How does hair testing compare with urine for non negative results?
Hair testing detects drug use over a longer period, typically up to 90 days, and is usually non-DOT regulated. Urine testing detects recent use within days and follows federally certified urine protocols for DOT safety-sensitive roles. A non negative result in hair or urine requires confirmatory testing and MRO review.
What happens after receiving a non negative drug test result?
After a non negative screen, the specimen undergoes confirmatory testing. If confirmed positive, the MRO contacts the individual for verification or medical review. Employers or requesters receive the final report to determine any necessary actions. Contact AMH Nationwide to understand your result and options.
Common Questions
Yes, non negative results from initial screens can be false positives due to cross-reactivity or certain medications. Confirmatory testing and MRO review are essential to verify the result before final reporting.
Confirmatory testing typically takes several days after the initial non negative result. The MRO review adds additional time before final results are issued to the requester.
AMH Nationwide works with five national labs offering a wide range of drug panels. Specific drugs tested depend on the panel selected by the requester. Call (877) 731-6362 for panel options.
Hair testing offers a longer detection window but is less common for DOT testing. Both hair and urine tests require confirmatory analysis for non negative results to ensure accuracy.
Wait for confirmatory testing and MRO review before drawing conclusions. Contact AMH Nationwide at (877) 731-6362 for assistance understanding your results.
A negative result means no drugs were detected above cutoff levels during the detection window. It does not guarantee absence of all drug use, especially outside the detection period or for untested substances.
Ready to get started?
AMH Nationwide provides the lab order and arranges collection nationwide. Every non-negative result reviewed by a certified Medical Review Officer. Call (877) 731-6362 or contact us.