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) Alcohols (3) Analgesics (14) Anesthetics (2) Antianxiety (4) Antiarrhythmics (4) Anticholinergics (6) Anticoagulants (2) Antidepressants (8) Antiepileptics/Antiseizures (7) Antifibrinolytics (1) Antigout Agents (1) Antihistamines (3) Antihypertensives (6) Antimicrobials (5) Antineoplastics (1) Antipsychotics (7) Antithrombotics (8) Antitussives/Cough Suppressants (2) Benzodiazepines (2) Biomarkers (3) Bronchodilators (2) Depressants (8) Diuretics (4) (-) Immunosuppressants (1) Metals/Elements (24) NPS/Designer Drugs (12) Pesticides/Insecticides (6) Plasticizers (1) Potassium Channel Blockers (1) Psychoactives (8) Sedative/Hypnotics (9) Solvents (2) Stimulants (10) Volatiles (7) Test Sub-Category Other (1) Test Test Name 0649SP Methotrexate, Serum/Plasma