Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Enzyme-Linked Immunosorbent Assay (ELISA) (9) Gas Chromatography/Mass Spectrometry (GC/MS) (1) (-) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (1) Inductively Coupled Plasma/Mass Spectrometry (ICP/MS) (19) Inductively Coupled Plasma/Optical Emission Spectrometry (ICP/OES) (3) Sample Type Blood (320) Fluid (69) (-) Hair (1) Meconium (9) Oral Fluid (Saliva) (10) Plasma (1) Serum or Plasma (362) Tissue (52) Umbilical Cord (4) Urine (215) Test Area Therapeutics (1) Test Category Analgesics (1) Test Sub-Category Opiates/Opioids (1) Test Test Name 9291H Fentanyl Screen, Hair