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) Inductively Coupled Plasma/Mass Spectrometry (ICP/MS) (2) Sample Type (-) Blood (1) Hair (1) Nails (1) Serum or Plasma (1) (-) Urine (1) Test Area Test Category Test Sub-Category Test Test Name 4370B Thallium, Blood 4370U Thallium, Urine