This test measures the amount of glucose in the fluid that surrounds your brain and spinal cord. If you have a serious infection, your glucose level may be lower than normal.

A blood glucose test tells you whether your level of glucose is within a healthy range. Fasting plasma glucose is a common test for diagnosing diabetes.

This test looks for changes in how well your kidneys are working. This is especially important if you have diabetes or high blood pressure.

This is a stool sample test to look for the parasite Giardia intestinalis. The parasite causes an infection of the small bowel.

This test measures the amount of the hormone gastrin in your blood. You may need this test if you have recurrent peptic ulcers.

This test looks for an enzyme called gamma-glutamyl transpeptidase in your blood. The test can help find out whether you have liver damage.

This test looks for enzyme activity in the red blood cells in your child's blood. It can help diagnose galactosemia, a rare inherited disorder.

This test checks for a deficiency in a protein in the blood known as Factor X. This protein helps with clotting.

This test helps find out if you have hemophilia A or another clotting disorder.

This test looks for a deficiency in a protein called factor V. This protein is one of your body's "clotting factors." When you have too little factor V, you may have bleeding problems.