The state has no license requirement for this role. No government form, no state board, no fee to the Department of Consumer Affairs. Given that California regulates roughly 300 occupations, its silence on sterile processing is almost conspicuous. What fills that gap is the industry itself – virtually every hospital system, ambulatory surgery center (ASC), and specialty clinic in the state lists the Certified Registered Central Service Technician (CRCST) from the Healthcare Sterile Processing Association (HSPA), or the equivalent Certification Board for Sterile Processing and Distribution (CBSPD) credential, as either required or the deciding factor between two otherwise equal candidates.