Bc 6900 hematology analyzer

Peripheral blood was collected within 7 days prior to the first line therapy. The differential counts of the white blood cells were determined using a hemocytometer. The percentages of the differential counts were determined using a BC-6900 Hematology Analyzer (Mindray, Shenzhen, China). The NLR calculations were made by dividing the serum neutrophil count by the lymphocyte count.

The characteristic epidemiological information (including recent exposure history, such as travel history and contact with patients with fever or respiratory symptoms from other cities in Hubei province or confirmed cases within 2 weeks) and basic information such as gender, age, clinical symptoms, and signs were collected from the admission records. All the laboratory data including complete blood count (BC-6900, Mindray, Shenzhen, China), serum biochemistry (AU5800, Beckman Coulter, CA, USA), and coagulation tests (ACL TOP 700, Werfen, Barcelona, Spain), were collected from the laboratory information system (LIS).
In this study, a total of 161 results detected on the Mindray BC-6900 hematology analyzer, along with biochemistry and coagulation tests, were collected from 45 patients with SARS-CoV-2 infection between January 23, 2020 and February 13, 2020. The laboratory test results were divided into two groups based on the sources of the samples, from moderate or severe patients, on which retrospective analysis and comparative analysis were performed.