BALTIMORE--(BUSINESS WIRE)--BRT Laboratories, Inc. announced today that Comprehensive Medical Associates will be joining its national network of draw centers. BRT Laboratories, Inc., an industry leader in relationship identity testing for immigration, welcomes clients to Comprehensive Medical Associates in Frederick, Maryland. Clients in the Frederick and Loudon County area, who are seeking DNA testing for immigration applications, can take advantage of this convenient site located near Oppossumtown Pike and Highway 15 in Frederick. The draw center will assist clients in the acquisition of DNA samples and completing the necessary chain of custody paperwork.