Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Ion Specific Electrode (ISE) (1) Sample Type Blood (1) (-) Liquid (1) Serum or Plasma (1) Urine (1) Test Area Substance ID (1) Test Category Analgesics (2) Antidepressants (2) (-) Metals/Elements (1) Test Sub-Category Other (1) Test Test Name 2090LI Fluoride Preservative Determination, Liquid