This test looks for bacteria that cause strep throat and scarlet fever. Both of these illnesses are quite contagious.

This test looks at cells taken from fluid in your nose or throat to see if you have respiratory syncytial virus (RSV), which attacks the upper respiratory tract.

This blood test looks for signs of syphilis, a sexually transmitted infection that can cause serious health problems if not treated.

This test quickly checks for signs of the influenza virus in a sample of secretions from your nose or throat.

This test measures the amount of antibodies called immunoglobulins in your blood. The test can tell whether you are lacking in one or more of these antibodies.

This test is one of several that looks at how well your blood clots. Your doctor may use this test to help diagnose a blood clotting disorder.

This test measures the level of prostate-specific antigen (PSA) in your blood. If your PSA levels start to rise, you may have prostate cancer.

The protoporphyrin test is used to diagnose blood problems caused by lead. The test can show lead exposure or lead poisoning.

This test measures levels of protein S, a protein in the blood that helps it to clot.

Protein electrophoresis is a test that measures specific proteins in the blood.