What It Measures
ALP measures the level of alkaline phosphatase enzyme in the blood. This enzyme is released into the bloodstream when tissues containing it—primarily the liver and bones—are damaged or undergoing increased activity such as bone growth or bile duct obstruction.
Alkaline phosphatase (ALP) is an enzyme found throughout the body, with the highest concentrations in the liver, bile ducts, bones, and kidneys. It plays a key role in breaking down proteins and is commonly used as a marker for liver and bone health. Abnormal levels can indicate a wide range of conditions from liver disease to bone disorders.
Current Value
What High Means
Elevated ALP may indicate liver disease (hepatitis, cirrhosis, bile duct obstruction, liver cancer), bone disorders (Paget's disease, osteomalacia, bone metastases, healing fractures), hyperparathyroidism, heart failure, bacterial infections, or certain cancers. In children and adolescents, higher levels are normal due to bone growth. Pregnancy (third trimester) also raises ALP due to placental production.
Possible Symptoms
Fatigue, weakness, nausea, vomiting, loss of appetite, jaundice (yellowing of skin/eyes), dark urine, light-colored stools, abdominal pain or swelling, itching, bone pain, unexplained weight loss, swelling in ankles and legs.
What Low Means
Low ALP levels may indicate hypophosphatasia (a rare genetic condition), malnutrition or protein deficiency, zinc or magnesium deficiency, hypothyroidism, celiac disease, pernicious anemia, or Wilson's disease. Chronically low ALP has been associated with impaired bone mineralization and cardiovascular calcification risk.
Possible Symptoms
Fatigue, muscle weakness, bone pain or tenderness, frequent fractures, dental abnormalities (premature tooth loss), numbness or tingling, seizures (in severe hypophosphatasia), poor wound healing.
Risk Factors
Liver disease (hepatitis, cirrhosis, fatty liver), bile duct obstruction, gallstones, bone disorders (Paget's disease, osteoporosis, rickets), hyperparathyroidism, chronic kidney disease, certain cancers (liver, bone metastases), vitamin D deficiency, celiac disease, malnutrition, alcohol abuse, and certain medications (statins, antiepileptics, antibiotics).
Actionable Advice
Supplements
- •Zinc
- •Magnesium
- •Vitamin D3
- •Vitamin K2
- •Milk Thistle
- •N-Acetyl Cysteine (NAC)
- •Phosphatidylcholine
- •Dandelion Root
- •Vitamin B6
Diet & Lifestyle
- •Limit alcohol consumption to protect liver function
- •Maintain a nutrient-dense diet rich in zinc, magnesium, and B vitamins
- •Exercise regularly with weight-bearing activities to support healthy bone turnover
- •Avoid unnecessary medications that stress the liver
- •Get adequate vitamin D through sunlight and supplementation
- •Stay hydrated and maintain a healthy body weight
- •Monitor and treat underlying conditions like fatty liver or bile duct issues
- •Avoid exposure to environmental toxins and pesticides
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Historical Trend
Resources & Studies
All Readings
| Date | Value | Change |
|---|---|---|
| 2026-01-28 | 44 U/L | +7.0 |
| 2025-08-25 | 37 U/L | -12.0 |
| 2025-06-27 | 49 U/L | — |