California Code, Business and Professions Code - BPC § 1247.6

(a) Except during training under immediate supervision, and except as provided in Section 1247.62, no person shall provide services as a hemodialysis technician without being certified by the department as a Certified Hemodialysis Technician (CHT).

(b) This article does not apply to home dialysis patients, or patient helpers not employed by the licensed facility, who have undergone a home dialysis training program operated by a licensed clinic or hospital as defined in Sections 1204 and 1250 of the Health and Safety Code and have been certified by the medical director of the facility as being competent to perform home dialysis treatment.