Fetal hemoglobin is one of many types of hemoglobin in the blood. High levels may mean you have thalassemia, myeloid leukemia, or sickle cell anemia.

This test can find out whether you have hemoglobin C disease, a blood disorder. Hemoglobin C causes hemolytic anemia, which is similar to sickle cell disease.

This blood test screens for the herpes simplex virus. You may need this test if you believe you may have herpes, but you don't have an active infection.

This is a tissue test to check for the protein HER2/neu. This protein is present in higher numbers in some breast cancers.

This test is used to find out if you are infected with Helicobacter pylori bacteria.

This test determines whether you are infected with the hepatitis C virus, a virus that attacks the liver and can lead to liver disease.

This test looks for an abnormal type of hemoglobin called hemoglobin S in your blood. This type of hemoglobin can be a sign that you have sickle cell disease.

This test is the gold standard for determining whether you are pregnant. It shows that you are pregnant before an imaging test, such as an ultrasound, can do so.

This test measures the level of a protein called haptoglobin in your blood. Low levels may mean that you have a type of anemia.

This test measures the amount of anti-Hib IgG antibody in your blood. The test can find out how well your body has responded to the Hib vaccine.