Normal blood test results for typical liver function tests include:

  • ALT. 7 to 55 units per liter (U/L)
  • AST. 8 to 48 U/L
  • ALP. 45 to 115 U/L
  • Albumin. 3.5 to 5.0 grams per deciliter (g/dL)
  • Total protein. 6.3 to 7.9 g/dL
  • Bilirubin. 0.1 to 1.0 mg/dL
  • GGT. 9 to 48 U/L
  • LD. 122 to 222 U/L
  • PT. 9.5 to 13.8 seconds

These results are typical for adult men. Normal results may vary slightly from laboratory to laboratory, and be slightly different for women and children. Results may also be affected by certain foods or medications. Be sure to mention any foods or medications you've eaten or taken so that your doctor can correctly interpret your results.

The farther from normal the test results are, the more likely you are to have significant liver disease. Your doctor will use these results to help determine any treatment that may be needed. If you already have liver disease, liver function tests can help determine how your disease is progressing and if you're responding to treatment.

Sept. 26, 2012