CRP and temporal arteritis: The criteria for GCA hold point value for symptoms or exam findings such as morning stiffness in the shoulders/neck, sudden vision loss, jaw or tongue claudication, new temporal headache, scalp tenderness, abnormal temporal artery exam, and diagnostic findings, including erythrocyte sedimentation rate (ESR) > 50 mm/hour, or C-reactive protein (CRP) >10 mg/L, positive temporal artery biopsy or halo sign on ultrasound, bilateral artery involvement, and fluorodeoxyglucose positron emission tomography (FDG-PET) activity throughout the aorta [3].