Bone Density Exam Frequency

Initial Screening Recommendations

• The American College of Physicians recommends that all postmenopausal women aged ≥65 years should undergo routine DXA screening regardless of risk factors 1
• The National Osteoporosis Foundation suggests that postmenopausal women aged 60-64 years with risk factors should be screened 1
• The American College of Physicians advises that younger postmenopausal women (<60 years) without risk factors do not need routine screening 1

Rescreening Intervals Based on Baseline Bone Density

• The American College of Rheumatology recommends that adults ≥40 years on chronic steroids should obtain baseline BMD within 6 months of starting glucocorticoid treatment 2, 3
• The Arthritis Care & Research journal suggests that patients on long-term glucocorticoid therapy should repeat DXA every 1-3 years, with earlier testing (annually) if receiving very high-dose glucocorticoids or have history of osteoporotic fracture 3

Special Populations Requiring More Frequent Testing

• The American College of Rheumatology advises that patients with previous fragility fractures require more intensive monitoring 4
• The Praxis Medical Insights guideline recommends that patients with history of fractures should repeat DXA every 1-2 years if on treatment to monitor effectiveness 1
• The Arthritis Care & Research journal suggests that if not on treatment but have fracture history, follow the glucocorticoid guideline intervals (every 1-3 years) 3

Clinical Factors That Shorten Rescreening Intervals

• The Praxis Medical Insights guideline recommends that new glucocorticoid therapy or other bone-depleting medications, incident fragility fracture, development of secondary causes of bone loss, significant weight loss, and poor medication adherence or absorption concerns mandate more frequent testing 4
• The Arthritis Care & Research journal advises that osteoporotic fracture occurring after ≥18 months of antifracture medication treatment requires more frequent testing 3

Technical Considerations

• The Praxis Medical Insights guideline suggests that a minimum 2-year interval between scans is required to reliably detect true bone density changes due to precision limitations of DXA technology 4, 1
• The American College of Rheumatology recommends that annual clinical fracture risk reassessment (history, physical exam, falls evaluation) should be performed even when not performing DXA 2, 3