Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Enzyme-Linked Immunosorbent Assay (ELISA) (3) Enzyme Immunoassay (EIA) (1) (-) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (1) Sample Type Blood (1) Test Area (-) Drugs of Abuse (1) Test Category (-) Alcohols (1) NPS/Designer Drugs (10) Stimulants (5) Test Sub-Category Biomarkers (1) Test Test Name 3752B Phosphatidylethanol, Blood