Immunoglobulins (Igs) are a group of proteins also known as antibodies. Antibodies provide your body with the first line of defense against invading pathogens. Immunoglobulins can be described as ...

Many different lab tests are used to find changes in your body that can happen with lupus. The results of each test help your doctor get a fuller picture of your health. Because lab tests alone can’t ...

Doctors use a serum iron blood test to determine the amount of iron in the blood. Too much or too little iron can cause serious health problems. To correct iron levels, people may need to take ...