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/Mass Spectrometry (GC/MS) (2) Sample Type (-) Blood (1) Serum or Plasma (1) (-) Urine (1) Test Area Exposure (2) Test Category (-) Acids (2) Analgesics (5) Antiarrhythmics (2) Antidepressants (7) Antiepileptics/Antiseizures (2) Antihistamines (1) Antihypertensives (2) Antimicrobials (1) Antipsychotics (1) Depressants (4) Metals/Elements (2) Other (2) Sedative/Hypnotics (2) Volatiles (2) Test Sub-Category Carboxylic Acids (2) Test Test Name 2134B Formic Acid, Blood 2134U Formic Acid, Urine