Wallach's Interpretation of Diagnostic Tests: Pathways to Arriving at a Clinical Diagnosis (967 page)

   Use

   Ketamine: induction of anesthesia

   Phencyclidine: no current medical use in the United States; abused as a hallucinogen

   LSD: no current medical use in the United States; abused as a hallucinogen

   Limitations

   LSD unstable in light, elevated temperature, and alkaline conditions and may irreversibly adsorb to containers.

   
Screening:
individual drug-specific tests required; immunoassay based on automated chemistry analyzers using blood/serum/urine

   Ketamine

   No tests currently available by immunoassay

   TLC procedures have a high limit of detection of approximately 1,000 ng/mL.

   See confirmation: readily detected with alkaline liquid–liquid or solid-phase extraction followed by gas chromatography or GC/MS analysis.

   PCP

   Tests available from multiple manufacturers