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) 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 (4) Test Area Drugs of Abuse (6) (-) Exposure (2) Postmortem (1) Therapeutics (17) 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)