Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Colorimetry (C) (1) Spectrophotometry (SP) (1) Sample Type Blood (5) Fluid (2) (-) RBCs (1) Serum or Plasma (4) (-) Tissue (1) Urine (4) Test Area Exposure (1) Therapeutics (1) Test Category (-) Analgesics (1) Antidepressants (1) (-) Biomarkers (1) Metals/Elements (1) Pesticides/Insecticides (1) Test Sub-Category Other (2) Test Test Name 4235R Sulfhemoglobin, RBCs 8001TI Salicylates Screen, Tissue