Giant Cell Arteritis Pre-test Probability

Estimate the pre-test probability of giant cell arteritis (temporal arteritis) using clinical features including age, sex, headache type, scalp tenderness, jaw claudication, and ESR/CRP.

Weight
Height
Clinical Guidance

BMI is a screening measure of body size, not a direct measure of body fat. The standard WHO categories are underweight (<18.5), normal (18.5–24.9), overweight (25–29.9), and obese (≥30).

BMI can overestimate body fat in athletes with high muscle mass and underestimate it in older adults with low muscle mass. Interpret it alongside waist circumference and clinical context rather than as a standalone diagnosis.

⚕ Clinical Disclaimer: These calculators are for educational and reference purposes only. Always verify results with qualified clinical judgment and current clinical guidelines. Do not use as a sole basis for medical decisions.
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How It Works

Estimate the pre-test probability of giant cell arteritis (temporal arteritis) using clinical features including age, sex, headache type, scalp tenderness, jaw claudication, and ESR/CRP

Each component has a specific meaning:

  • Clinical features including age — The clinical features including age recorded for the scenario being assessed.
  • Sex — The sex recorded for the scenario being assessed.
  • Headache type — The headache type recorded for the scenario being assessed.
  • Scalp tenderness — The scalp tenderness recorded for the scenario being assessed.
  • Jaw claudication — The jaw claudication recorded for the scenario being assessed.
  • ESR/CRP — The esr/crp recorded for the scenario being assessed.

Note: Interpret the gca pre-test prob. result against the thresholds and context described above.

How to Use

Enter the clinical features including age, sex, headache type, scalp tenderness, jaw claudication, ESR/CRP for the scenario you are assessing. Estimate the pre-test probability of giant cell arteritis (temporal arteritis) using clinical features including age, sex, headache type, scalp tenderness, jaw claudication, and ESR/CRP. Use the gca pre-test prob. result to inform your calculation.

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