DAS28-CRP
A composite score for RA disease activity using 28-joint counts, CRP and patient global assessment. Use to monitor response and guide treat-to-target strategy.
For clinicians only. This tool is for healthcare professionals and clinical education only. It does not diagnose, replace clinical judgement, or replace specialist assessment. Any decisions about a patient must be based on full clinical assessment, investigations where appropriate, and current clinical guidelines.
Formula: 0.56·√TJC + 0.28·√SJC + 0.014·PGA + 0.36·ln(CRP+1) + 0.96
<2.6 remission · 2.6–3.2 low · >3.2–5.1 moderate · >5.1 high
DAS28-CRP tends to run slightly lower than DAS28-ESR at the same clinical activity; use the same version consistently for the same patient over time.
For clinicians only. This tool is for healthcare professionals and clinical education only. It does not diagnose, replace clinical judgement, or replace specialist assessment. Any decisions about a patient must be based on full clinical assessment, investigations where appropriate, and current clinical guidelines.
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