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) Test Sub-Category Antifungals (1) Benzodiazepines (5) (-) Carboxylic Acids (2) Diuretics (2) H2 Antagonists (1) Opiates/Opioids (4) Other (8) Selective Serotonin Reuptake Inhibitors (SSRI) (6) Trace Elements (2) Test Test Name 2134B Formic Acid, Blood 2134U Formic Acid, Urine