2022 ACR/EULAR Giant Cell Arteritis Classification Criteria
2022 ACR/EULAR giant-cell-arteritis classification (weighted, max 25); a cumulative score ≥ 6 classifies as GCA once the age ≥ 50 entry requirement is met.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Entry: age ≥ 50 at diagnosis
- Yes
- ESR ≥ 50 or CRP ≥ 10 mg/L
- Yes
- Sudden visual loss
- Yes
Result: 2022 ACR/EULAR 6/25 — ≥ 6: classify as giant cell arteritis.
The tool opens with these values already filled in. Replace them with your own.
What the result means
- Threshold
- a cumulative score ≥ 6 classifies as giant cell arteritis (sensitivity 87.0%, specificity 94.8%).
What you enter
- Entry: age ≥ 50 at diagnosis
- Positive TA biopsy or halo on ultrasound (+5)
- ESR ≥ 50 or CRP ≥ 10 mg/L (+3)
- Sudden visual loss (+3)
- Morning stiffness of shoulders/neck (+2)
- Jaw or tongue claudication (+2)
- New temporal headache (+2)
- Scalp tenderness (+2)
The other 3 fields
- Abnormal temporal artery on exam (+2)
- Bilateral axillary involvement on imaging (+2)
- FDG-PET activity throughout the aorta (+2)
How this is calculated
- Items
- after the age ≥ 50 entry: biopsy/halo +5; ESR ≥ 50 or CRP ≥ 10 +3; sudden visual loss +3; and +2 each for six clinical and two imaging items (max 25).
Ponte C, Grayson PC, Robson JC, et al. 2022 American College of Rheumatology/EULAR classification criteria for giant cell arteritis. Ann Rheum Dis. 2022;81(12):1647-1653. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.