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A tissue type test is a blood test that identifies substances called antigens on the surface of body cells and tissues. Checking

Surgery for Crohn's disease usually is needed if ongoing symptoms do not respond to medicine or if side effects of medicine cause

Total parenteral nutrition (TPN) is a way to provide nutrition without using the digestive tract. TPN is a liquid that contains

Chlamydia tests use a sample of body fluid or urine to see whether chlamydia bacteria (Chlamydia trachomatis) are present and

What is hepatitis B? Hepatitis B is a virus that infects the liver. Most people who get it have it for a short time and then get

Chorionic villus sampling (CVS) is a test that can find certain problems with a fetus during pregnancy. These include many

This surgery is done to treat ulcerative colitis. The doctor removes all of the large intestine (colon) and the diseased lining of

An immunoglobulins test is done to measure the level of immunoglobulins, also known as antibodies, in your blood. Antibodies are

An iron test checks the amount of iron in the blood. Iron (Fe) is a mineral needed for hemoglobin, the protein in red blood cells

A cold agglutinins blood test is done to check for conditions that cause the body to make certain types of antibodies called cold