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) (1) (-) Enzymatic Assay (EZA) (2) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (6) Inductively Coupled Plasma/Mass Spectrometry (ICP/MS) (15) Inductively Coupled Plasma/Optical Emission Spectrometry (ICP/OES) (3) Sample Type Fluid (1) Urine (1) Test Area Diagnostic Aids (2) Test Category Biomarkers (2) (-) Electrolytes (2) Test Sub-Category Small Molecule (2) Test Test Name 0645FL Bicarbonate, Fluid 0645U Bicarbonate, Urine