Other commonly encountered laboratory findings include lymphopenia, eosinopenia, altered neutrophil/lymphocyte ratio of ≥ 3.13, thrombocytopenia, elevated levels of C-reactive protein (CRP), ferritin, D-dimer, procalcitonin, prothrombin time (PT), activated partial thromboplastin time (aPTT), creatine kinase, serum glutamic pyruvic transaminase (SGPT), serum urea, and creatinine. Here, CRP is linked to lymphopenia.