CA Health & Safety Code Section 100702

(a)

All laboratories that are subject to the requirements of Section 100700 shall follow the American Society of Crime Laboratory Directors/Laboratory Accreditation Board (ASCLD/LAB) guidelines for proficiency testing. The required proficiency test must be obtained from any ASCLD/LAB approved test provider.

(b)

Each laboratory shall participate annually in an external proficiency test for alcohol analysis.

(c)

Each examiner shall successfully complete at least one proficiency test annually.

(d)

Each laboratory shall have a procedure in writing that describes a review of proficiency test results, and, if applicable, the corrective action taken when proficiency test results are inconsistent with expected test results.