eScreen tests for a full range of drugs and e-delivers the results. The company provides drug testing products and services to occupational health facilities throughout the US. eScreen's products are primarily used for pre-employment drug testing. Sample collection takes place at its nationwide network of about 2,600 contracted clinics that are equipped with eScreen's products and technology. Samples are collected in an eCup screening device, optically scanned on site by the eReader, and negative results are electronically reported directly to employers within minutes. Positive results are sent on for further testing before being reported. eScreen was acquired by diagnostics firm Alere in 2012.