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) (2) Inductively Coupled Plasma/Mass Spectrometry (ICP/MS) (14) (-) Inductively Coupled Plasma/Optical Emission Spectrometry (ICP/OES) (3) Sample Type Blood (1) Serum or Plasma (1) Urine (1) Test Area Exposure (3) Test Category Analgesics (9) Antiarrhythmics (2) Anticholinergics (6) Antidepressants (5) Antiepileptics/Antiseizures (2) Antimigraines (3) Diagnostic Aids (1) Immunosuppressants (1) (-) Metals/Elements (3) NPS/Designer Drugs (7) Opiates/Opioids (3) Pesticides/Insecticides (5) Sedative/Hypnotics (2) Vasodilators (3) Volatiles (1) Test Sub-Category Toxic Elements (3) Test Test Name 4190B Silicon, Blood 4190SP Silicon, Serum/Plasma 4190U Silicon, Urine