Aptagen, LLC The company is a biotechnology company offering aptamer and aptabody custom-based services to replace antibodies in research, diagnostic platforms, drug discovery and therapeutics. The company was formed in 2004. Operations began in 2006.  The company is located in Jacobus, PA, a suburb of York, beautifully surrounded by Lake Redman and conveniently situated off of Interstate 83. The facility is a forty minute drive from Johns Hopkins University and Hershey Medical Center.