Cal. Bus. & Prof. Code § 1246.7
(a) Notwithstanding any other law, a person may perform a total protein test using a digital refractometer in a licensed plasma collection center in this state, if the department, as part of its routine, fee-supported inspection of the licensed plasma collection center, including its review of personnel reports for licensed and unlicensed personnel and job descriptions of all center positions for a licensed plasma collection center, determines that all of the following conditions are met:
(1)
(2)
(3) The person performs the total protein test using a digital refractometer under the supervision of one of the following individuals:
(6) The person performs the total protein test using a digital refractometer in accordance with both of the following:
(b) The digital refractometer used to perform a total protein test pursuant to this section shall meet all of the following criteria: