Rheumatology · Internal Medicine

DAS28-CRP for Rheumatoid Arthritis calculator

Enter the published formula inputs below to calculate and interpret this score.

Clinical inputs

Tender joint count (0-28)

joints

Allowed range: 0–28 joints

Swollen joint count (0-28)

joints

Allowed range: 0–28 joints

CRP

mg/dL

Allowed range: 0.01–30 mg/dL

Patient global health

0-100

Allowed range: 0–100 0-100

Result

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Clinical inputs

Tender joint count (0-28) (joints)Accepted range: 0 to 28
Swollen joint count (0-28) (joints)Accepted range: 0 to 28
CRP (mg/L)Accepted range: 0.1 to 300
Patient global health (0-100)Accepted range: 0 to 100

Primary source

Prevoo ML et al. Modified disease activity scores that include twenty-eight-joint counts. Development and validation in a prospective longitudinal study of patients with rheumatoid arthritis. Arthritis Rheum. DOI: 10.1002/art.1780380107. PMID: 7818570. Scope: DAS28-CRP = 0.56*sqrt(TJC28) + 0.28*sqrt(SJC28) + 0.36*ln(CRP+1) + 0.014*GH + 0.96. (1995)

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