Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Inductively Coupled Plasma/Mass Spectrometry (ICP/MS) (2) Spectrophotometry (SP) (1) Sample Type Blood (24) Fluid (4) (-) Hair (1) Liquid (1) Nails (1) (-) RBCs (2) Serum or Plasma (24) Tissue (3) Urine (22) Test Area Exposure (3) Test Category Biomarkers (1) Metals/Elements (2) Test Sub-Category Other (1) Trace Elements (2) Test Test Name 4180H Selenium, Hair 4180R Selenium, RBCs 4235R Sulfhemoglobin, RBCs