Elite Clinical Laboratory

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Oral Toxicology Confirmation

Definitive testing to confirm oral drug use and metabolites

Introduction​

Definitive Oral Drug Testing

Oral toxicology confirmation testing uses advanced technologies such as LC-MS/MS or GC-MS to accurately identify and quantify specific drugs and metabolites in saliva. This non-invasive method allows for direct observation during sample collection, reducing the risk of tampering. It is especially valuable for confirming screening results or when precise drug identification is needed from the outset, offering fast, highly specific, and legally defensible data for clinical and forensic settings.

Why the Test Is Significant​

Definitive Drug Identification

  • Eliminating false positives from screening tests

Non-Invasive Collection

Reducing sample adulteration risks compared to urine testing

Detects Recent Use

  • Identifies drug use, within hours to 1-2 days for most substances

Specific Drug Detection

Crucial for accurate clinical management and risk assessment

Unknown and Interesting Facts

Oral fluid often contains higher levels of the parent drug—rather than its metabolites—making it more reflective of recent drug use and potential impairment. This matrix has a shorter detection window than urine, which is ideal for identifying recent exposure. However, variables like dry mouth, sample collection methods, and drug-specific characteristics (e.g., low THC levels in saliva) can influence results. Despite these nuances, oral fluid testing remains a convenient, tamper-resistant option for many clinical and forensic applications.

Medical Necessity and Signs/Symptoms

  • Confirmation of a presumptive oral fluid screen result
  • Suspected recent drug use requiring timely verification
  • Evaluating impairment in workplace or emergency settings
  • Observed sample collection required to reduce tampering
  • Drug monitoring when urine testing is not feasible
  • Compliance tracking in addiction recovery programs
  • Quantitative confirmation of prescribed medication adherence
  • Legal, forensic, or program-driven toxicology requirements

Post-Test Support

Elite Clinical Laboratory provides high-precision confirmation testing using LC-MS/MS to detect and quantify substances in oral fluid. Our reports clearly differentiate parent compounds from metabolites, helping clinicians assess recent drug exposure with greater confidence. We offer expert guidance on interpreting these results within their short detection windows, assisting with treatment decisions, compliance monitoring, and risk management across clinical, occupational, and legal environments.

Our Documentation