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) (2) Sample Type Blood (1) (-) Serum or Plasma (1) (-) Urine (1) Test Area Therapeutics (2) Test Category Acids (2) Analgesics (9) Anesthetics (3) Antidepressants (9) Antidiabetics (2) Antiepileptics/Antiseizures (5) Antihistamines (1) Antihypertensives (3) (-) Antimicrobials (2) Antineoplastics (1) Antiparkinsons (2) Antipsychotics (9) Antirheumatics (1) Biomarkers (4) Bronchodilators (3) Cholinesterase Inhibitors (1) Depressants (1) Diuretics (1) Immunosuppressants (2) Metals/Elements (12) Muscle Relaxants (1) Sedative/Hypnotics (3) Solvents (3) Stimulants (2) Sympathomimetic Amines (2) Terpenes (2) Vasodilators (1) Volatiles (2) Test Sub-Category Antibiotics (2) Test Test Name 4704SP Trimethoprim, Serum/Plasma 4704U Trimethoprim, Urine