Chem 12 Testing: Reference Range

Chem 12 is a nickname for Comprehensive Metabolic Panel. It’s a test that measures the chemical levels in the blood and the status of metabolism. So, the results could tell important information like the status of the kidneys and liver.

14 groups of tests compose the Chem 12 Test, and every test in the Chem 12 has its own normal range.

  • Albumin: 3.4 to 5.4 g/dL (34 to 54 g/L)
  • Alkaline phosphatase: 44 to 147 IU/L (0.73 to 2.45 µkat/L)
  • ALT (alanine aminotransferase): 7 to 40 IU/L (0.12 to 0.67 µkat/L)
  • AST (aspartate aminotransferase): 10 to 34 IU/L (0.17 to 0.57 µkat/L)
  • BUN (blood urea nitrogen): 6 to 20 mg/dL (2.14 to 7.14 mmol/L)
  • Calcium: 8.5 to 10.2 mg/dL (2.13 to 2.55 mmol/L)
  • Chloride: 96 to 106 mEq/L (96 to 106 mmol/L)
  • CO2 (carbon dioxide): 23 to 29 mEq/L (23 to 29 mmol/L)
  • Creatinine: 0.6 to 1.3 mg/dL (53 to 114.9 µmol/L)
  • Glucose: 70 to 100 mg/dL (3.9 to 5.6 mmol/L)
  • Potassium: 3.7 to 5.2 mEq/L (3.70 to 5.20 mmol/L)
  • Sodium: 135 to 145 mEq/L (135 to 145 mmol/L)
  • Total bilirubin: 0.3 to 1.9 mg/dL (5.0 to 32.5 µmol/L)
  • Total protein: 6.0 to 8.3 g/dL (60 to 83 g/L)

Interpretations:

A single abnormal (high or low) result in the 14 tests is less serious than several abnormal results occur at the same time. But if you’re worried when there’s a single abnormal result, you may get other tests to localize the cause.

In addition, if several results in the Chem 12 are out of range, you may ask your doctor for specific diagnosis.

 

Keywords: Chem 12; Chemistry Screen; CMP; Comprehensive Metabolic Panel; Comprehensive Metabolic Panel (CMP); SMA 12; SMA 20; SMAC (somewhat outdated terms)

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