DAS28-CRP Calculator

Disease Activity Score-28 for Rheumatoid Arthritis with CRP

Clinical Parameters

Min: 0Max: 28
Min: 0Max: 28

Enter CRP value in mg/L

0 (Very well)0.010 (Very poor)

Formula & Calculation

DAS28-CRP = 0.56×√(TJC) + 0.28×√(SJC) + 0.36×ln(CRP+1) + 0.014×GH×10 + 0.96
0.56 × √(0) =0.000
0.28 × √(0) =0.000
0.36 × ln(+1) =
0.014 × 0 × 10 =0.000
Constant =0.960
DAS28-CRP Score =0.00

Result

0.00
Remission
< 2.6Remission
2.6 - 3.2Low Activity
3.2 - 5.1Moderate Activity
> 5.1High Activity

Clinical Pearls

  • • A "treat to target" approach is recommended
  • • Joint assessment excludes feet
  • • Inter-rater variability exists in joint classification
  • • Lower scores indicate better disease control

About DAS28-CRP

The Disease Activity Score-28 with CRP is a validated measure of rheumatoid arthritis disease activity. It combines objective and subjective measures to provide a comprehensive assessment of disease status and treatment response.