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) Test Area (-) Drugs of Abuse (1) Exposure (1) Therapeutics (2) Test Category Alcohols (1) Test Sub-Category Alkaloids (3) (-) Biomarkers (1) Other (10) Stimulants (3) Synthetic Cathinone (3) Test Test Name 3752B Phosphatidylethanol, Blood