ScanLag is a high-throughput method for measuring the delay in growth, namely lag time, as well as the growth rate of colonies for thousands of cells in parallel. Screening using ScanLag enables the discrimination between long lag-time and slow growth at the level of a single variant.
Levin-Reisman, I., Fridman, O., Balaban, N. Q. ScanLag: High-throughput Quantification of Colony Growth and Lag Time. J. Vis. Exp. (89), e51456, doi:10.3791/51456 (2014).