Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Gas Chromatography (GC) (1) (-) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (3) Sample Type Blood (4) (-) Serum or Plasma (3) Urine (2) Test Area Drugs of Abuse (1) Therapeutics (2) Test Category Analgesics (9) Antianxiety (1) Anticholinergics (1) Antidepressants (1) Antidiabetics (4) Antidiarrheals (1) Antiemetics (1) Antiepileptics/Antiseizures (8) Antihistamines (3) Antihypertensives (5) Antimicrobials (11) Antipsychotics (4) Antitussives/Cough Suppressants (2) Carbonic Anhydrase Inhibitors (1) Cholinesterase Inhibitors (1) (-) Depressants (1) Diuretics (1) Emetics (1) Expectorants (1) Hallucinogens (3) (-) Immunosuppressants (2) Muscle Relaxants (3) NMDA Antagonists (1) NPS/Designer Drugs (1) Retinoids (2) Sedative/Hypnotics (4) Stimulants (2) Test Sub-Category Opiates/Opioids (1) Other (2) Test Test Name 2276SP Heroin Metabolites - Free (Unconjugated), Serum/Plasma 2531SP Leflunomide as Metabolite (Therapeutic Drug Monitoring), Serum/Plasma 2532SP Leflunomide as Metabolite (Pre-Pregnancy Monitoring), Serum/Plasma