liver · ALP · ALKP
Alkaline Phosphatase
An enzyme from the liver/bile ducts and bone. Elevations can reflect bile-flow problems or bone turnover; it's interpreted with GGT (high together suggests liver/bile) and clinical context.
This page is general wellness education, not medical advice. Your own lab’s reference range and your clinician’s interpretation always take precedence.
Typical reference range
| Group | General range |
|---|---|
| Adults | ~44–147 U/L (assay-dependent); higher in adolescents and pregnancy |
Units: U/L. Ranges vary by lab and assay — read yours against the range printed on your own report.
What high Alkaline Phosphatase can mean
- Bile-duct obstruction
- Liver disease
- Bone growth or disease
- Pregnancy
- Some medications
What low Alkaline Phosphatase can mean
- Zinc/magnesium deficiency
- Malnutrition
- Hypothyroidism
- Rare genetic conditions