This is a blood test for pernicious anemia, which is caused by a deficiency of vitamin B-12.

This blood test looks to see how well your blood clots. The test is especially important if you take blood-thinning medicines.

This test measures 2 types of insulin in your body: total and free. The test can help diagnose low blood sugar, or hypoglycemia.

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.