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) (4) Inductively Coupled Plasma/Mass Spectrometry (ICP/MS) (13) (-) Inductively Coupled Plasma/Optical Emission Spectrometry (ICP/OES) (1) Sample Type Blood (1) Hair (1) Nails (1) Serum or Plasma (1) (-) Urine (1) Test Area Exposure (1) Test Category Analgesics (5) Anesthetics (2) Antacids (1) Anticholinergics (1) Antidepressants (4) Antiepileptics/Antiseizures (2) Antihypertensives (2) Antimicrobials (2) Antimigraines (1) Antipsychotics (3) Bronchodilators (1) Decongestants (1) Hallucinogens (1) (-) Metals/Elements (1) NPS/Designer Drugs (1) Opiates/Opioids (1) Other (1) Pesticides/Insecticides (1) Sedative/Hypnotics (4) Stimulants (2) Sympathomimetic Amines (1) Vasodilators (1) Volatiles (2) Test Sub-Category Toxic Elements (1) Test Test Name 4190U Silicon, Urine