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 (16) Anesthetics (4) Antianxiety (7) Antiarrhythmics (4) Anticholinergics (10) Antidepressants (9) Antiepileptics/Antiseizures (10) Antifibrinolytics (1) Antihistamines (4) Antihypertensives (8) Antimicrobials (8) Antineoplastics (1) Antipsychotics (7) Antithrombotics (2) Bronchodilators (4) Diuretics (5) (-) Immunosuppressants (1) Potassium Channel Blockers (2) Sedative/Hypnotics (5) Stimulants (7) Test Sub-Category Other (1) Test Test Name 0649SP Methotrexate, Serum/Plasma