CRP and juvenile polyposis syndrome: Sukhonthamarn investigated the thresholds for diagnosing PJI within 90 days post-operatively in 197 patients with joint arthroplasties and reported a sensitivity and specificity of 0.91 and 0.83 for WBC (6130/μl), 0.95 and 0.59 for PMN (79.5%) and 0.91 and 0.87 for CRP (38.9 mg/dl), respectively [7].