This test measures the amount of insulin-like growth factor-1 (IGF-1) in your blood.

This test measures the amount of bilirubin in your blood.

This blood test screens for antibodies in your blood.

This test looks for certain proteins in a sample of your cerebral spinal fluid. An increase in these proteins could be a sign of an inflammatory or immune disorder.

This test separates and measures proteins in your urine. It looks for an abnormal protein called monoclonal protein, or M-protein.

This blood test finds out if you are abnormally making or losing protein or whether you are having problems absorbing protein.

This test finds out if you have DNA from the herpes simplex virus in your nervous system. It can help diagnose encephalitis and meningitis.

This test looks for the virus that causes genital warts and cervical, throat, and anal cancer.

This test measures levels of homocysteine in your blood. At high levels, it can damage the lining of arteries and encourage blood clotting.

This test looks for a certain protein made by your immune system. The test can help tell whether you have an autoimmune disease.