A workup was initiated, which included a complete blood count (CBC), complete metabolic panel (CMP), erythrocyte sedimentation rate (ESR), C-reactive protein (CRP), procalcitonin, urinalysis (UA), blood cultures (bcx), point of care strep test (POC Strep), mononucleosis screen, extended respiratory film array, EKG, chest X-ray (CXR), and computed tomography (CT) neck soft tissue with IV contrast. The gene discussed is CRP; the disease is infectious mononucleosis.