What is DAS28 used for?

DAS28 measures rheumatoid arthritis disease activity by combining tender and swollen joint counts, an inflammatory marker (ESR or CRP), and patient global health into one score. It drives treat-to-target decisions: remission is <2.6, and scores above 5.1 indicate high disease activity warranting treatment escalation.

How is lupus disease activity measured?

SLEDAI-2K is the standard tool, scoring 24 weighted clinical and laboratory descriptors — from neuropsychiatric findings to renal, mucocutaneous, and immunologic markers — present within the prior 10 days, summed into a single activity score used to detect flares and guide immunosuppression.

How is rheumatoid arthritis formally classified?

The 2010 ACR/EULAR criteria score joint involvement, serology (RF/ACPA), acute-phase reactants (CRP/ESR), and symptom duration, with a threshold of 6 out of 10 points classifying definite RA in a patient with synovitis not better explained by another disease.

Rheumatology Calculators & Classification Criteria

Q: How is lupus disease activity measured?

SLEDAI-2K is the standard tool, scoring 24 weighted clinical and laboratory descriptors — from neuropsychiatric findings to renal, mucocutaneous, and immunologic markers — present within the prior 10 days, summed into a single activity score used to detect flares and guide immunosuppression.

Q: How is rheumatoid arthritis formally classified?

The 2010 ACR/EULAR criteria score joint involvement, serology (RF/ACPA), acute-phase reactants (CRP/ESR), and symptom duration, with a threshold of 6 out of 10 points classifying definite RA in a patient with synovitis not better explained by another disease.

Rheumatology tools including DAS28 disease activity score, SLEDAI-2K lupus activity index, ACR/EULAR RA classification criteria, and ACR/EULAR gout classification criteria. Built for rheumatologists tracking disease activity and classifying inflammatory arthritis.

This category currently includes 4 tools, including DAS28 Score, SLEDAI-2K, and RA Classification (ACR/EULAR).

These resources are built for clinicians, trainees, and medically informed patients who need fast bedside calculations. Use the results as decision support and pair them with full clinical context and local guidelines.

All Rheumatology Tools (4)

DAS28 Score

Calculate DAS28-ESR to measure rheumatoid arthritis disease activity. Remission <2.6, low ≤3.2, moderate ≤5.1, high >5.1. Free treat-to-target calculator.

SLEDAI-2K

Score SLE disease activity with SLEDAI-2K across 24 weighted clinical and lab descriptors. Free lupus flare and treatment-response calculator.

RA Classification (ACR/EULAR)

Score the 2010 ACR/EULAR Rheumatoid Arthritis Classification Criteria across joints, serology, acute-phase reactants, and duration. ≥6/10 classifies definite RA.

Gout Criteria (ACR/EULAR)

Score the 2015 ACR/EULAR Gout Classification Criteria across clinical, laboratory, and imaging domains. ≥8 points classifies gout. Free calculator.

Frequently Asked Questions

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