Veins and arteries vary in size from one person to another and from one side of the body to the other. Taking blood from some people may be more difficult than from others.
Other risks associated with having blood drawn are slight but may include:. Comprehensive metabolic panel CMP - blood. Laboratory Tests and Diagnostic Procedures. St Louis, MO: Elsevier; appendix 7. The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed physician should be consulted for diagnosis and treatment of any and all medical conditions.
Call for all medical emergencies. Encourage your child to relax and stay still because tensing muscles can make it harder to draw blood. Your child might want to look away when the needle is inserted and the blood is collected. Encourage your child to relax by taking slow deep breaths or singing a favorite song. Most blood tests take just a few minutes.
Occasionally, it can be hard to find a vein so the health professional may need to try more than once. The health professional will remove the elastic band and the needle and cover the area with cotton or a bandage to stop the bleeding.
Afterward, there may be some mild bruising, which should go away in a few days. Blood samples are processed by a machine, and it may take a few hours to a day for the results to be available. If the test results show signs of a problem, the doctor might order other tests to figure out what the problem is and how to treat it. A comprehensive metabolic panel is a safe procedure with minimal risks.
Learn more about laboratory tests, reference ranges, and understanding results. It does not include the liver and protein tests.
The information on this site should not be used as a substitute for professional medical care or advice. Contact a health care provider if you have questions about your health. What is a comprehensive metabolic panel CMP? A CMP includes tests for the following: Glucose , a type of sugar and your body's main source of energy. Calcium , one of the body's most important minerals.
Calcium is essential for proper functioning of your nerves, muscles, and heart. Sodium , potassium , carbon dioxide , and chloride. These are electrolytes, electrically charged minerals that help control the amount of fluids and the balance of acids and bases in your body.
Albumin , a protein made in the liver. Total protein , which measures the total amount of protein in the blood. You may also have this test done to check for kidney and liver diseases. It can also check on many other problems, including diabetes. If you take medicines for high blood pressure, you may have this test to see how your kidneys and liver are working.
You may also have this test if you take other medicines that can affect your kidneys or liver. Your healthcare provider may also order other tests to look at how well your liver and kidneys are working. These tests may include:. Your healthcare provider may also order other blood tests to check for iron deficiency, anemia, and other disorders:.
Test results may vary depending on your age, gender, health history, the method used for the test, and other things. Your test results may not mean you have a problem. Ask your healthcare provider what your test results mean for you.
Normal findings may be different depending on the laboratory used.
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