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) (1) Sample Type Blood (1) Serum or Plasma (1) (-) Urine (1) Test Area Exposure (1) Test Category Acids (1) Test Sub-Category (-) Carboxylic Acids (1) Selective Serotonin Reuptake Inhibitors (SSRI) (1) Test Test Name 2134U Formic Acid, Urine