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) Spectrophotometry (SP) (1) Sample Type (-) Blood (2) RBCs (1) Serum or Plasma (2) Urine (1) Test Area (-) Exposure (2) Test Category Acids (1) Alcohols (1) (-) Biomarkers (2) Other (1) Pesticides/Insecticides (1) Solvents (3) Terpenes (1) Volatiles (3) Test Sub-Category Cyanide (1) (-) Other (2) Test Test Name 4235B Sulfhemoglobin, Blood 4472B Thiosulfate, Blood