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Factors associated with serum alkaline phosphatase level
1Biostatistics Center, George Washington University, Rockville, Md 20852.
Archives of Pathology & Laboratory Medicine
|February 1, 1993
Summary
Serum alkaline phosphatase levels vary significantly with age, sex, and lifestyle factors like weight and smoking. These variations are crucial for accurate clinical interpretation of test results.
Area of Science:
- Biochemistry
- Clinical Chemistry
- Human Physiology
Background:
- Serum alkaline phosphatase (ALP) is an enzyme with widespread physiological roles.
- Understanding normal ALP fluctuations is essential for accurate clinical diagnosis.
- Factors influencing ALP levels require comprehensive investigation across diverse populations.
Purpose of the Study:
- To investigate the influence of demographic and lifestyle factors on serum alkaline phosphatase concentrations.
- To establish reference ranges and identify determinants of ALP levels in a large adult and adolescent population.
- To assess the clinical implications of observed variations in serum alkaline phosphatase.
Main Methods:
- Cross-sectional study measuring serum alkaline phosphatase in government employees and dependents (aged 12+).
- Data collected on age, sex, weight, height, smoking habits, serum glucose, and blood pressure.
- Statistical analysis to determine associations between ALP levels and various influencing factors.
Main Results:
- ALP concentrations were highest in early adolescence, decreased post-bone growth, then increased with age.
- Sex-based differences observed: higher in males until age 50, then higher in females.
- Positive correlations found between ALP and weight, smoking, serum glucose, and blood pressure; negative correlation with height.
Conclusions:
- Age, sex, weight, and smoking significantly impact serum alkaline phosphatase levels.
- These physiological variations must be considered for accurate clinical interpretation of ALP tests.
- Further research into the clinical significance of these associations is warranted.