Our service for clinical trials and patient care complies with both GCP regulations and with the accreditation criteria for medical laboratories as laid down in the EN/ISO 15189 and specified in the Dutch CCKL Code of practice for the implementation of a quality system. The accreditation covers the professional competence of the laboratory staff, the quality system of the laboratory as well as the specified activities and disciplines as described in the authorized annex bearing the accreditation number. We are currently working towards the NEN-EN-ISO-15189 accreditation of the Dutch Council of Accreditation.