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) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (3) (-) Ion Specific Electrode (ISE) (1) Sample Type Blood (1) (-) Liquid (1) Serum or Plasma (1) Urine (1) Test Area Substance ID (1) Test Category Metals/Elements (1) Test Sub-Category Other (1) Test Test Name 2090LI Fluoride Preservative Determination, Liquid