Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) 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) Other (4) Test Test Name 2134B Formic Acid, Blood