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) (1) (-) Gas Chromatography/Mass Spectrometry (GC/MS) (1) Sample Type Blood (1) Serum or Plasma (1) (-) Urine (1) Test Area Exposure (1) Test Category (-) Acids (1) Alcohols (5) Antiepileptics/Antiseizures (1) Biomarkers (1) Depressants (2) Drugs of Abuse (4) Drugs of Abuse, Therapeutics (3) Industrial/Environmental Toxins (1) Solvents (5) Therapeutics (2) Volatiles (9) Test Sub-Category Carboxylic Acids (1) Test Test Name 2134U Formic Acid, Urine