Clinical Decision Support

Rheumatology guidance,
right at the point of care.

Symptom-based calculators built for primary care clinicians. Check your patient's symptoms, get weighted recommendations, suggested labs, and clear next steps — in under two minutes.

Browse Calculators → Lab Reference Guide

RA Symptom Calculator

Patient Symptom Profile

Morning stiffness > 1 hour

Symmetric small joint swelling

MCP/PIP involvement

Rheumatoid nodules

Recommendation

Refer to Rheumatology · Order RF, anti-CCP, ESR, CRP

⚠️

For clinical decision support only. AutoimmuneCalc is not a diagnostic tool and does not replace clinical judgment. All recommendations should be interpreted in the context of the full clinical picture.

Clinical Tools

Symptom Calculators

Each calculator uses weighted symptom scoring to generate specialty-specific referral recommendations and suggested workup.

Rheumatoid Arthritis

Joint swelling, morning stiffness, symmetric involvement, serology patterns.

Malar rash, photosensitivity, serositis, renal involvement, ANA patterns.

Sjögren's Syndrome

Sicca symptoms, glandular swelling, fatigue, neuropathy, and overlap features.

Inflammatory Myositis

Proximal weakness, skin findings, ILD features, elevated muscle enzymes.

Systemic Sclerosis

Raynaud's, skin thickening, GI dysmotility, ILD, and puffy fingers.

Vasculitis Screening

Constitutional symptoms, rash, renal findings, ANCA patterns, organ involvement.

Lab Reference

Interpreting Common Rheumatology Labs

Plain-language guides to the results PCPs most commonly encounter — and aren't sure what to do with.

ANA 1:80 Speckled — What Does It Mean?

Titer levels, patterns, and when to refer vs. reassure.

RF & Anti-CCP: Positive but Asymptomatic?

Specificity, sensitivity, and clinical context for RA serology.

Low C3/C4 — When Should You Worry?

Consumption vs. inherited deficiency, lupus patterns.

Inflammation Markers

ESR vs. CRP: Which to Order and Why

Clinical utility, pitfalls, and interpretation in context.

ANCA Positive: Next Steps

PR3 vs. MPO, c-ANCA vs. p-ANCA, when it's urgent.

Myositis Antibodies

Anti-Jo-1 and MSA Panel Interpretation

Myositis-specific antibodies and their clinical correlates.

How It Works

Built for the primary care workflow

Designed to take less than two minutes at the point of care.

1

Select a Condition

Choose the condition you're considering based on your patient's presentation.

2

Check Symptoms

Check the boxes that apply. Each symptom carries a clinical weight behind the scenes.

3

Get Next Steps

Receive a referral recommendation, suggested labs, and a brief rationale to guide your decision.