The Comprehensive Metabolic Panel (CMP) is a group of 14 blood tests that gives a broad snapshot of your metabolism, organ function, and chemical balance. It's one of the most common panels ordered at a routine check-up.
What the CMP Covers
Blood Sugar
Glucose screens for diabetes and prediabetes. A high fasting glucose may prompt an HbA1c test.
Kidney Function
Creatinine, BUN, and eGFR assess how well your kidneys filter waste. Learn more in our kidney tests guide.
Electrolytes
Sodium, potassium, chloride, and bicarbonate reflect hydration, nerve and heart function, and acid-base balance. See our electrolyte guide.
Liver Function
ALT, AST, ALP, bilirubin, total protein, and albumin evaluate liver health. Explore our liver enzymes article.
Calcium
Calcium is vital for bones, nerves, and muscles, and reflects parathyroid and kidney function.
How Doctors Read It
The power of the CMP is in the pattern. For example, a high glucose with abnormal kidney markers may indicate diabetes affecting the kidneys, while abnormal liver enzymes with low albumin can point to more advanced liver issues. Single mild abnormalities are common and often harmless.
Preparing for the Test
Many CMPs are done fasting (usually 8–12 hours) for accurate glucose and electrolyte readings. Follow your lab's instructions, and tell your doctor about any medications or supplements.
When to Follow Up
Review flagged values with your doctor, especially when several related tests are abnormal together or a result is marked critical.
Decode Your Full Panel
Upload your CMP to Lab Lens and get every one of those 14 results explained in plain English.