What is ALP?
a liver and bone enzyme
ALP is an enzyme found in liver, bile ducts, and bone. It rises mainly with bile flow problems or increased bone turnover.
ALP is high during growth and can be raised in pregnancy. In liver disease, ALP rises mainly with cholestasis (impaired bile flow).
Test facts
- Unit
- µkat/L
- Sample
- Serum
- Fasting
- No fasting needed
- Turnaround
- 1 day
What does low ALP mean?
Low ALP is uncommon and can appear with certain mineral deficiencies or hypothyroidism.
What does high ALP mean?
High ALP needs context - GGT helps distinguish whether the source is liver or bone.
Panels that measure ALP
- Deep Baseline
- Liver Check
More markers in the same area
Launching in Stockholm in 2026.
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This is general information about the marker, not an assessment of your values and not medical advice. Last updated: May 2026.