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) Inductively Coupled Plasma/Mass Spectrometry (ICP/MS) (1) Sample Type Blood (7) Fluid (2) (-) RBCs (1) Serum or Plasma (5) Stool (1) (-) Tissue (1) Urine (4) Test Area Exposure (1) Therapeutics (1) Test Category Antidepressants (1) Antiepileptics/Antiseizures (1) (-) Antihistamines (1) Antihypertensives (1) Drugs of Abuse (2) Hallucinogens (1) (-) Metals/Elements (1) Therapeutics (3) Volatiles (1) Test Sub-Category Macrominerals (1) Other (1) Test Test Name 3784R Potassium - Total, RBCs 3970TI Promethazine, Tissue