ATLANTA--(BUSINESS WIRE)--QualTex Laboratories, a San Antonio, Texas-based independent blood testing lab, celebrates the grand opening of its expanded operations in Gwinnett County, Georgia, today. The lab’s expansion in Norcross will result in the hiring of more than 100 highly-trained, expert clinical laboratory scientists, certified lab technicians, quality specialists, materials management personnel and general management personnel and an investment of nearly $12 million dollars over the initial five years.