About LB Genetics

LB GENETICS is an AABB Accredited facility specializing in paternity and family relationship DNA testing services.  AABB Accreditation is the international gold standard for paternity testing laboratories, and is required by most courts and government agencies for acceptance of a paternity and family relationship DNA test results.  

Our legally-defensible DNA paternity tests and family relationship tests are accepted and admissible as evidence by Superior Courts of California and nationwide.  

What Makes Us Different

LB GENETICS is dedicated to providing DNA testing services of exceptional quality. Our experience and expertise has earned the trust of medical and legal and professionals nationwide.  For over 20 years, our specialists have been helping people with diverse and challenging circumstances find important answers about their family relationships through DNA testing.  We take the time to listen to our clients, to understand their needs, to advise them of their options and to determine the best approach for their personal situation.


Unlike our competitors, we won’t recommend a DNA test to you if we believe that it won’t give you a clear answer to your question.  This can happen with certain testing scenarios, so please educate yourself before you buy.   Call us for a free consultation.  Our friendly, knowledgeable staff is here to help you find the answers, the support, and the resources that you need. Your complete privacy and confidentiality are assured.

The tests are  admissible for family law matters, and are accepted by U.S. Federal Courts, the U.S. Department of State and U.S. Citizenship and Immigration Services (USCIS) for matters involving U.S. immigration.


About Dr. John Taddie, PhD, Director

John Taddie, PhD is the Director of LB GENETICS.  Dr. Taddie has over 20 years of experience in DNA testing and he has supervised over 150,000 paternity tests. He has testified as a DNA paternity testing expert in over 50 California civil and criminal court trials involving child support, child custody, estate claims, welfare fraud, immigration, sexual assault and homicide. Dr. Taddie is an AABB member and served on the AABB Relationship Testing Standards Program Unit, the team of experts that establishes the internationally accepted AABB Standards for Relationship Testing Laboratories.  He received his B.S. in Microbiology from Penn State University and his Ph.D. in Molecular Biology from Cornell University.

Dr. Taddie has presented lectures on DNA identification and paternity testing for the USC School of Medicine, UCI Medical Center, Cal State University, the American Red Cross, the Orange County Clinical Laboratory Management Association, and the California Welfare Fraud Investigators Association. 

Dir Taddie will provide you with a free paternity test cinsultation.

 He has also provided training on DNA testing for numerous legal organizations,  including the Beverly Hills Bar Association, the West Orange County Bar Association, the Orange County Paralegal Association, and Legal Secretaries Incorporated, as well as for attorneys and staff of over 100 government child support agencies throughout California and the United States.