Laboratory tests for novel coronavirus pneumonia are characterized by normal or decreased total peripheral blood leukocyte count and decreased lymphocyte count early in the course of the disease. Some patients also have elevated transaminases, lactate dehydrogenase, myokines and myoglobin, and in severe cases may have elevated troponin. Severe elevations in D-dimer are accompanied by progressive reductions in peripheral blood lymphocytes, and progressive elevations in C-reactive protein in severe and critically ill patients. Currently, novel coronavirus nucleic acids can be detected in specimens such as pharyngeal swabs, sputum and lower respiratory secretions, blood, stool, etc. In order to improve the detection rate of specimens, it is recommended that fresh sputum be retained, and lower respiratory secretions can be taken for testing in patients undergoing tracheal intubation.