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This test measures the amount of rubella antibodies in your blood. If you're pregnant, it's especially important to know if you have immunity against this virus.

This test looks for salmonella bacteria in your stool. Having these bacteria in your stool means you have a salmonella infection.

This test is used to see if a child has certain chromosome changes.

This test measures the amount of urea nitrogen in your urine. The test can help diagnose kidney problems.

This test looks for antibodies in your blood that your body makes against the varicella-zoster virus. The virus causes chickenpox and shingles.

The atrial septum is the wall between the two upper chambers of the heart (right and left atria). An atrial septal defect (ASD) is an abnormal hole in this wall. ASD is a heart problem that is present at birth (congenital). Read on for details about symptoms, diagnosis, and treatment.

Cardiac catheterization is a procedure in which a long, flexible tube (catheter) is put into a blood vessel. The doctor then guides the catheter into the heart to find and treat heart problems.

Cardiomyopathy is any disease of the heart muscle in which the heart loses its ability to pump blood effectively.

In most cases of congenital heart defect, the cause is thought to be a combination of genetics and environment.