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 Blood (1) Serum or Plasma (1) (-) Urine (1) Test Area Therapeutics (1) Test Category Antihypertensives (1) Test Sub-Category Appetite Suppressants (1) Benzodiazepines (1) (-) Calcium Channel Blockers (1) Designer Benzodiazepines (1) Drug Facilitated Sexual Assault (1) Insecticides (1) Opiates/Opioids (2) Other (30) Selective Serotonin Reuptake Inhibitors (SSRI) (1) Serotonin-Norepinephrine Reuptake Inhibitors (SNRI) (1) Tricyclic (2) Test Test Name 1640U Diltiazem, Urine