Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) (-) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (1) Sample Type (-) Serum or Plasma (1) Test Area Therapeutics (1) Test Category Alcohol Deterrents (1) Analgesics (10) Anesthetics (2) Antianxiety (4) Antiarrhythmics (4) Anticholinergics (6) Anticoagulants (2) Antidepressants (2) Antiepileptics/Antiseizures (7) Antifibrinolytics (1) Antihistamines (1) Antihypertensives (6) Antimicrobials (3) Antineoplastics (1) Antipsychotics (4) Antithrombotics (8) Benzodiazepines (2) Bronchodilators (2) Diuretics (4) (-) Immunosuppressants (1) NPS/Designer Drugs (12) Pesticides/Insecticides (2) Potassium Channel Blockers (1) Psychoactives (8) Stimulants (6) Volatiles (2) Test Sub-Category Other (1) Test Test Name 0649SP Methotrexate, Serum/Plasma