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More than 22 million Americans are involved in some form of helping elderly family members or friends with their daily routines. If you're part of this group, whether you call yourself a caregiver, or simply a good daughter or son, you know that caring for an aging parent or friend has its rewards and its trials.

This blood test gives information about your body’s metabolism. It gives a snapshot of the health of your kidneys, your blood sugar levels, and the levels of key electrolytes, such as potassium and sodium.

This is a blood test to check for a type of medicines called benzodiazepines. These are depressant medicines used to help patients sleep and ease anxiety.

This blood test finds out if you have an infection that affects your whole body, not just one part.

This test is a screening panel of 14 tests that look at your metabolism. The tests help see how well your liver and kidneys are working.

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

This is a blood test for pernicious anemia, which is caused by a deficiency of vitamin B-12.

This stool test is used to diagnose a rotavirus infection, which causes vomiting and diarrhea.

Warts on the skin are harmless growths. They are caused by a virus. Warts can spread to other parts of the body and to other people.