This test measures the amount of urea nitrogen in your urine. The test can help diagnose kidney problems.

This test measures the amount of urea nitrogen in your blood. It can help your doctor see how well your kidneys are working.

This test is used to see if a child has certain chromosome changes.

This test checks your stool for two enzymes made by the pancreas. The test measures how well your pancreas is working to see if you have pancreatic insufficiency or cystic fibrosis.

This test measures levels of trypsin in your blood to see if you have pancreatitis.

This test measures the amount of the protein troponin in your blood. It can tell your doctor if you are having a heart attack.

This test measures the amount of triglycerides in your blood. This test is part of a group of cholesterol and blood fat tests called a fasting lipoprotein panel, or lipid panel.

This test is used to check a sample of blood or urine for tricyclic antidepressants. Although these medicines can be helpful in normal doses, taking too much can be fatal.

This test looks for a parasite that causes the sexually transmitted disease trichomoniasis. It can cause complications during pregnancy.

This test measures the amount of the protein transferrin in your blood. It can give your doctor more information about health issues like anemia that are affecting your body's iron supply.