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) (1) (-) Spectrophotometry (SP) (1) Sample Type Blood (10) (-) RBCs (1) Serum or Plasma (9) Tissue (1) Urine (10) Test Area Test Category Test Sub-Category Test Test Name 4235R Sulfhemoglobin, RBCs