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Age-related reference intervals for bone turnover markers from an Australian reference population
1Clinical Biochemistry Unit, Alfred Pathology Service, Melbourne, Australia. n.jenkins@alfred.org.au
Bone
|April 23, 2013
Summary
This study establishes age-specific reference ranges for procollagen type I N-propeptide (P1NP) and type I collagen C-telopeptide (CTx) in Australians. These findings provide crucial data for interpreting bone turnover markers in clinical practice.
Area of Science:
- Biochemistry
- Endocrinology
- Gerontology
Background:
- Bone turnover markers, including procollagen type I N-propeptide (P1NP) and type I collagen C-telopeptide (CTx), are essential for assessing bone metabolism.
- Establishing accurate, population-specific reference intervals is critical for reliable clinical interpretation.
Purpose of the Study:
- To determine age-related serum reference intervals for P1NP and CTx in the Australian population.
- To provide a robust dataset for the clinical assessment of bone turnover.
Main Methods:
- Serum samples from 1143 males and 1246 females (aged 20-97 years) from the Geelong Osteoporosis Study were analyzed.
- Procollagen type I N-propeptide (P1NP) and type I collagen C-telopeptide (CTx) levels were measured using the Roche Modular Analytics E170 analyser.
Main Results:
- Age- and sex-specific reference intervals were established based on the central 90% of data distribution.
- Reference intervals for CTx varied across different age groups for both males and females.
- Reference intervals for P1NP also showed age-dependent variations, with higher values noted in younger individuals and older females, potentially indicating increased bone turnover.
Conclusions:
- This study provides reliable, age-related reference intervals for serum P1NP and CTx in the Australian population.
- These established intervals will aid clinicians in the accurate interpretation of bone turnover markers.
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