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 (12) Anesthetics (3) Antianxiety (3) Antiarrhythmics (2) Anticholinergics (6) Antidepressants (8) Antiepileptics/Antiseizures (6) Antifibrinolytics (1) Antigout Agents (1) Antihistamines (2) Antihypertensives (4) Antimicrobials (5) Antineoplastics (1) Antipsychotics (6) Antithrombotics (2) Antitussives/Cough Suppressants (2) Bronchodilators (1) Depressants (2) Diuretics (3) (-) Immunosuppressants (1) Potassium Channel Blockers (2) Sedative/Hypnotics (8) Stimulants (6) Test Sub-Category Other (1) Test Test Name 0649SP Methotrexate, Serum/Plasma