COVID test pooling hampered by high positivity rates and logistical hurdles Adam Bonislawski Print In the early days of the coronavirus pandemic, pooled molecular COVID-19 testing was promoted as an approach that could increase lab capacity while saving valuable resources such as reagents and other supplies. But as COVID-19 positivity rates have reached new highs and because of the logistical and personnel challenges involved in running pooled testing, implementation of the method has been limited, especially within smaller facilities, said a number of laboratory heads. As the country struggl...