Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (1) Sample Type (-) Serum or Plasma (1) Urine (1) Test Area Exposure (1) Test Category (-) Pesticides/Insecticides (1) Test Sub-Category (-) Avicides (1) Carbamates (1) Herbicides (1) Other (1) Test Test Name 0276SP 4-Aminopyridine Exposure, Serum/Plasma