Skip Navigation LinksNew-OOS-ClinicalLaboratoryLicense


California Out-of-State Clinical Laboratory License

Who should apply?

  • Laboratories that are physically located outside of California.
  • Laboratories that perform diagnostic testing on specimens originating in California.
  • Laboratories performing moderate and/or high complexity testing on specimens originating in California.

blue circle with laptop Go Paperless, apply online!


​​Mail-in Requirements for OOS Initial Application

For sites located in states outside California, complete the application form (LAB 144 OS) and submit the appropriate documents requested below.  There are recent changes in the requirements. Read and follow the instructions described below.


Important Reminders

  • All forms must be completed, filled out and dated. Supporting documents may be submitted in electronic format.
  • Complete all applicable sections of the forms and provide dated signatures where required. Supporting documents may be submitted via email to Incomplete forms, missing information, and/or insufficient documentation will delay processing.
  • After our initial review, applicants will be given 30 days to correct any deficiencies. Failure to satisfy the Department's requirements will result in the abandonment of the application and/or termination of the license.
  • The application fee is non-refundable and will not be credited to your account if the application is abandoned, denied, or withdrawn.


Please mail all forms, supporting documents, and fee to the address below:

California Department of Public Health
Laboratory Field Services
Attn: Out-of-State Laboratory Licensing Program
850 Marina Bay Parkway, Bldg. P, 1st Floor
Richmond, CA 94804


Contact Details

For questions please contact:
By email: 
By telephone: (510) 620-3800


Page Last Updated :