Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Colorimetry (C) (10) Gas Chromatography (GC) (21) Headspace Gas Chromatography (GC) (7) Hematofluorometry (H) (1) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (8) High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS) (7) Inductively Coupled Plasma/Mass Spectrometry (ICP/MS) (52) Inductively Coupled Plasma/Optical Emission Spectrometry (ICP/OES) (5) (-) Spectrophotometry (SP) (2) Sample Type Blood (1) RBCs (1) Test Area (-) Exposure (2) Therapeutics (1) Test Category Biomarkers (2) Test Sub-Category Other (2) Test Test Name 4235B Sulfhemoglobin, Blood 4235R Sulfhemoglobin, RBCs