What Is the Difference Between CMP and BMP?

Q: What Is the Difference Between CMP and BMP?

CMP has 14 tests (adds 6 liver tests to BMP's 8). BMP = kidney + electrolytes + glucose. CMP = BMP + liver function. Choose based on whether liver assessment is needed.

CMP and BMP are both metabolic panels but differ in the number of tests included.

BMP (8 tests)

Glucose
Calcium
Sodium
Potassium
Chloride
CO2
BUN
Creatinine

CMP (14 tests)

All 8 BMP tests PLUS:
ALT
AST
ALP
Total bilirubin
Albumin
Total protein

When to Choose Which

BMP: kidney monitoring, electrolyte checks, when liver function is not a concern
CMP: annual physical, liver disease monitoring, pre-operative screening, medication monitoring

Source: NLM MedlinePlus, American Association for Clinical Chemistry.

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