Physicians Diagnostic Reference Laboratory, a full service clinical lab, is dedicated to perform laboratory testing with precision, accuracy and quality control since 1990. Our professional staff is available to assist with any questions, discuss test results, or make suggestions for clarification.

We maintain the view that your patients are our customers too. Therefore, they deserve our commitment, as much as yours, to quality health care. We also recognize the importance of rapid turn-around to our clients; therefore, specimens are processed upon receipt, and test results are rapidly reported out.

Our laboratory is fully licensed by the state of California Department of Health services and Health Care Financing Administration through the Clinical Laboratory Improvement (CLIA) program.

We appreciate the relationship we enjoy through the medical community and currently provide excellence through quality and service.


Physicians Diagnostic Reference Laboratory quality assurance is an integral part of our commitment to never compromise the quality of our services. The quality of our analytical results is at the heart of those services. The integrity and reliability of our testing process is supported by our performance standards and rigid criteria for acceptability. Our on-going, internal and external quality control programs have helped us achieve some of the highest ratings attainable.


  • Blind Submission Program
  • Proficiency Testing
  • Continuing Quality Control Surveillance
  • Internal Review and Inspection Programs
  • Continuous Monitoring of Instrumentation
  • Continuous Monitoring of Procedures
  • Mandatory Repeat Testing
  • Automatic Reviews
  • Continuing Education
  • Strict Adherence to Test Protocols
  • Constant Review of Quality Programs

Providing a safe working environment for our employees is not only an obligation, but also a significant factor in our quality efforts. Physicians Diagnostic Reference Laboratory’s Safety Program meets or exceeds all governmental requirements and is reviewed regularly for improvements.