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 (GC) (1) Gas Chromatography/Mass Spectrometry (GC/MS) (3) (-) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (3) Inductively Coupled Plasma/Mass Spectrometry (ICP/MS) (1) Sample Type (-) Blood (3) Serum or Plasma (6) Test Area Test Category Test Sub-Category Test Test Name 2143B Gabapentin, Blood 2158B Glipizide, Blood 2185B Guaifenesin, Blood