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) Gas Chromatography (GC) (2) (-) Gas Chromatography/Mass Spectrometry (GC/MS) (2) Sample Type (-) Blood (1) Serum or Plasma (1) (-) Urine (1) Test Area Exposure (2) Test Category (-) Acids (2) Alcohols (2) Drugs of Abuse (2) Drugs of Abuse, Therapeutics (1) Gases (1) Industrial/Environmental Toxins (1) Other (1) Solvents (3) Therapeutics (3) Volatiles (10) Test Sub-Category Carboxylic Acids (2) Test Test Name 2134B Formic Acid, Blood 2134U Formic Acid, Urine