I

Immunoglobulins Indirect Coombs' Test Indocyanine Green Test Inhibin A Measurement Insulin C-Peptide Internal Fetal Heart Monitoring International Normalized Ratio (INR) Intracavernosal Injection Test (for Erection Problems) Intravenous Pyelogram (IVP) Iodine Uptake Test, Radioactive Iontophoresis Test (Sweat Test) Iron (Fe) Iron Storage (Ferritin) IVP (Intravenous Pyelography)