Interpretation
| Result | Meaning |
|---|---|
| < 2.6 | Remission |
| 2.6–3.2 | Low |
| > 3.2–5.1 | Moderate |
| > 5.1 | High |
Formula
DAS28-ESR = 0.56 × √TJC28 + 0.28 × √SJC28 + 0.70 × ln(ESR mm/h) + 0.014 × patient global health (0–100 mm)
Clinical pearls
- The 28-joint count covers shoulders, elbows, wrists, MCPs, PIPs and knees; feet and ankles are excluded, so active foot disease can be missed.
- DAS28 remission (<2.6) can coexist with residual swollen joints; ACR/EULAR Boolean or SDAI ≤3.3 remission is stricter.
- The global health item is a 0–100 mm scale; if the patient rated 0–10, multiply by 10.
Examples
das28 esr tjc 4 sjc 4 esr 25 global health 50DAS28 for RA patient with 12 tender and 10 swollen joints, ESR 60, patient global 80 mm
FAQ
What DAS28 score is remission?
A DAS28 below 2.6 is the conventional remission threshold; 2.6–3.2 is low, above 3.2 to 5.1 moderate and above 5.1 high disease activity.
Should I use DAS28-ESR or DAS28-CRP?
Either is valid, but DAS28-CRP usually runs lower than DAS28-ESR for the same patient, so use the same version over time.