Comprehensive metabolic panel

Comprehensive Metabolic Panel (CMP)

A comprehensive metabolic panel (CMP) is a series of blood tests used to measure the levels of different substances in the blood and detect certain health conditions. The CMP is one of the most frequently ordered tests in medical care.


You do not need to do anything to prepare for a comprehensive metabolic panel. The only thing you do need to remember is to fast for 8-12 hours before having the test. This means that you should not eat or drink anything except for water during this period of time.


The procedure for a comprehensive metabolic panel is a simple one. A healthcare provider will draw a small sample of your blood, typically from your arm, and send it to a lab for testing. The results of the test will be available within a few days.

Types of Tests

A comprehensive metabolic panel measures the following chemicals in your blood:

  • Glucose (blood sugar)
  • Calcium
  • Albumin and globulin (proteins)
  • Total protein
  • Urea nitrogen (BUN)
  • Creatinine
  • Sodium
  • Potassium
  • Chloride
  • Bicarbonate or CO2
  • Blood urea nitrogen (BUN) to creatinine ratio
  • Calcium
  • Protein/creatinine ratio

Risks and Side Effects

A comprehensive metabolic panel is a very safe procedure which carries very few risks. The most common side effect you may experience is some slight bruising or discomfort at the site of the injection. This should subside within a few days.

When to Have a CMP

A comprehensive metabolic panel may be ordered for any number of reasons. It can be used to assess overall health and identify metabolic disorders, vitamin deficiencies, or electrolyte imbalances. It is also used to monitor the progress of an existing condition or to check for drug toxicity. In some cases, a CMP may be part of a routine physical examination.

Why is a CMP Important?

A comprehensive metabolic panel is an important part of overall health screening and monitoring. It can be used to detect any metabolic disorders or vitamin deficiencies that could be causing symptoms or may be linked to an existing medical condition. It can also help healthcare providers to monitor the efficacy of current treatment plans and adjust them if necessary. Thus, a comprehensive metabolic panel is an important tool in preventing and treating health conditions.