This test is used to rule out whether you have a blood clot. When blood clots form and start to break down, they release the substance D-dimer into the blood.

This test looks for cytomegalovirus, a common virus that belongs to the herpes family. Your doctor might order the test if you have unexplained symptoms that are like the flu.

This test looks for antibodies to cytomegalovirus (CMV), a virus in the herpes family, in your blood.

This test checks the amniotic fluid around a developing baby for cytomegalovirus, a virus that belongs to the herpes family of viruses.

This panel of tests looks for many illnesses in your blood, including anemia, infections, and leukemia. It can help see how your overall health is.

This test looks for cystic fibrosis in newborn babies. People with CF tend to develop chronic lung disease and are at risk for lung infections.

This test is done to see if you carry a defective gene that may cause cystic fibrosis in your child.

This test measures the amount of a protein called cystatin C in your blood. This is a fairly new blood test to look at your kidney health.

This test is done to find out if you have abnormal proteins in your blood. They can be a sign of rheumatoid arthritis, lupus, or Raynaud's syndrome, among other illnesses.

This test looks at your stool for toxins that may be causing persistent diarrhea.