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 24 Hour Urine (3) Blood (13) Fluid (4) Hair (5) (-) Liquid (1) Nails (3) RBCs (6) Serum or Plasma (8) Stool (3) Tissue (2) Urine (15) Test Area Substance ID (1) Test Category Metals/Elements (1) Test Sub-Category (-) Other (1) Toxic Elements (6) Trace Elements (3) Test Test Name 2090LI Fluoride Preservative Determination, Liquid