The test looks for HIV-1 antibodies in your blood. Your body makes these antibodies when you have been exposed to HIV, the virus that causes AIDS.

This test looks for which type of herpes simplex virus is causing your infection.

This is a blood test to find out how much hemoglobin is in your blood. You may need this test if you have anemia or symptoms of anemia.

This test measures how much of your blood is made up of red blood cells. Too many or too few red blood cells can cause health problems.

This is a breath test that checks for H. pylori, a common infection that can cause ulcers and other stomach irritations.

This test finds out whether you have a hepatitis infection. It looks for infection by one of several hepatitis viruses.

This blood test looks for hepatitis B surface antigens. It is used to find out whether you have a recent or long-standing infection from the hepatitis B virus.

This test looks for antibodies called IgM in your blood. The test is used to find out whether you are actively infected with the hepatitis B virus.

This test finds out whether you are infected with the hepatitis A virus. Hepatitis A is one of 5 hepatitis viruses, all of which can infect the liver.

This test measures the amount of HDL ("good") cholesterol in your blood. It's one of several tests that can determine your risk for heart disease.