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) Test Area Therapeutics (2) Test Category Analgesics (15) Antidepressants (8) Antidiabetics (2) Antiepileptics/Antiseizures (6) Antihistamines (2) Antihypertensives (6) Antimicrobials (3) Antineoplastics (2) Antiparkinsons (3) Antipsychotics (2) Antirheumatics (2) Biomarkers (6) Bronchodilators (4) Cholinesterase Inhibitors (2) Diuretics (2) Immunosuppressants (5) Muscle Relaxants (2) Other (1) Sedative/Hypnotics (5) Stimulants (3) Sympathomimetic Amines (3) (-) Vasodilators (2) Volatiles (1) Test Sub-Category Other (2) Test Test Name 4297B Tadalafil, Blood 4297SP Tadalafil, Serum/Plasma