Iron and Iron Binding Capacity Insulin, 30 Minutes Interleukin 13 Iron Stain Insulin, 60 Minutes Interleukin 17 Iron, Liver Insulin, 90 Minutes Interleukin 2 Iron, Plasma or Serum Isopropanol (Includes Acetone) Isotretinoin Quantitative, Serum or Plasma Itraconazole, Quantitative by LC-MS/MS