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) Enzyme-Linked Immunosorbent Assay (ELISA) (1) Gas Chromatography (GC) (2) Gas Chromatography (GC) and Gas Chromatography/Mass Spectrometry (GC/MS) (1) Gas Chromatography/Mass Spectrometry (GC/MS) (1) Headspace Gas Chromatography (GC) (1) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (17) High Performance Liquid Chromatography/Time of Flight-Mass Spectrometry (LC/TOF-MS) (2) (-) Inductively Coupled Plasma/Mass Spectrometry (ICP/MS) (1) Sample Type (-) Blood (2) Fluid (1) Hair (1) Nails (1) RBCs (1) Serum or Plasma (2) Tissue (1) Urine (2) Test Area Exposure (2) Therapeutics (1) Test Category Industrial/Environmental Toxins (1) Metals/Elements (1) Vasodilators (1) Test Sub-Category Other (1) Toxic Elements (1) Test Test Name 3140B Nickel, Blood 3174B Nitrate/Nitrite (Qualitative), Blood (Forensic)