Scaling deterministic lateral displacement arrays for high throughput and dilution-free enrichment of leukocytes

A disposable device for fractionation of blood into its components that is simple to operate and provides throughput of greater than 1 mL min −1 is highly sought after in medical diagnostics and therapies. This paper describes a device with parallel deterministic lateral displacement devices for enrichment of leukocytes from blood. We show capture of 98% and approximately ten-fold enrichment of leukocytes in whole blood. We demonstrate scaling up through the integration of six parallel devices to achieve a flow rate of 115 µL of undiluted blood per minute per atmosphere of applied pressure.