Drugs of Abuse Testing
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Specific Drug Groups Interpretive Guide
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Approximate Detection Times
Drugs of Abuse Testing Information
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Drug Abuse Survey
Confirmed Drug Abuse Survey
Specific Drug Group Confirmation
Therapeutic Drug Monitoring
Prescription and Over-the-Counter (OTC) Drug Screens
Limits of Detection (LOD)
May only be able to detect drug when taken in excess, therapeutic administration may not be detected.
Attempts to "beat the test" usually involve the use of a masking agent. Masking agents function as either an assay-interfering substance or a urine diluent.
Adulterant testing is performed for urine drugs of abuse tests.