On Oct. 16, 2020, BD (Becton, Dickinson) announced the CE mark and European availability of a product for assessing immune function in COVID-19 patients.

The BD Multitest™ 6-Color TBNK Reagent with BD Trucount™ Tubes has been CE marked with expanded clinical application for the identification and enumeration of T-cell subtypes in COVID-19 patients, an innovation in helping clinicians better understand patient immune response to COVID-19 disease. Data from the first global wave of COVID-19 have shown that patients typically exhibit a remarkable decrease of CD4 and/or CD8 lymphocyte counts with increasing disease severity.

Accurate counts of T-cell subsets may be critical in informing the clinical course of action because T-cells are essential for viral killing and antibody response. The BD Multitest™ 6-Color TBNK Reagent with BD Trucount™ Tubes leverages time-tested technology for immune assessment and enables clinicians to go beyond the complete blood count (CBC) to better understand the underlying mechanisms for severity in COVID-19 patients, especially those with co-morbidities. This test has been used for more than a decade to assess immune function in HIV patients and may now also help clinicians better understand COVID-19 patient immune response, and when used in conjunction with clinical findings and laboratory testing, inform patient treatment plans and prioritize precious resources.