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) (1) Gas Chromatography (GC) (8) Gas Chromatography/Tandem Mass Spectrometry (GC-MS/MS) (1) Headspace Gas Chromatography (GC) (1) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (5) Inductively Coupled Plasma/Mass Spectrometry (ICP/MS) (7) Sample Type Blood (1) (-) Serum or Plasma (1) Urine (8) Test Area (-) Exposure (1) Test Category Industrial/Environmental Toxins (1) Therapeutics (1) Vasodilators (1) Test Sub-Category Other (1) Test Test Name 3174SP Nitrate/Nitrite (Qualitative), Serum/Plasma