HOKLAS or Hong Kong Laboratory Accreditation Scheme is a voluntary accreditation provided by the Hong Kong Accreditation Service (HKAS). It is only available to organizations based in Hong Kong. HOKLAS accreditation is open to participation by any Hong Kong laboratory, testing provider, or reference material producer. The HOKLAS accreditation requirements are designed to align with relevant ISO accreditations for organizations that offer testing (both medical and non-medical), calibration, proficiency testing, and reference material providers. The accreditation standards contain both management requirements and technical requirements. The HKAS website hosts a search of HOKLAS-accredited organizations.