Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Gas Chromatography (GC) (23) Gas Chromatography/Mass Spectrometry (GC/MS) (2) Headspace Gas Chromatography (GC) (4) (-) Hematofluorometry (H) (1) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (68) High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS) (3) Inductively Coupled Plasma/Mass Spectrometry (ICP/MS) (11) Inductively Coupled Plasma/Optical Emission Spectrometry (ICP/OES) (1) (-) Spectrophotometry (SP) (1) Sample Type (-) Blood (2) RBCs (1) Serum or Plasma (1) Test Area Exposure (2) Test Category Biomarkers (1) Other (1) Test Sub-Category Biomarkers (1) Other (1) Test Test Name 4235B Sulfhemoglobin, Blood 4885B ZPP (Zinc Protoporphyrin), Blood