Health Services Laboratories (HSL)

Health Services Laboratories (HSL) is a clinically-led provider of pathology and diagnostic services, supporting clinicians in the delivery of high quality patient care.

HSL is a partnership between The Doctors Laboratory, an independent provider of clinical pathology services in the UK, the Royal Free London NHS Foundation Trust and University College London Hospitals NHS Foundation Trust.

The collaboration harnesses The Doctors Laboratory’s experience of large scale clinical laboratory operations and NHS Trusts’ excellent environments for clinical care, research and teaching.

A User Guide outlines key contacts as well as guidance on ordering tests, specimen collection and transport and sample requirements. The guide also contains information on HSL’s Genetics division.

Additional information relating to HSLs Advanced Diagnostics tissue services can be located at and from its preferred tissue molecular profiling partner service Sarah Cannon Molecular Diagnostics at

HSL participates in accredited National External Quality Assessment Schemes, and all services are CPA/UKAS accredited and compliant with HTA and MHRA regulatory authorities, where appropriate.

As well as the Trusts within the partnership, HSL also provides lab services for North Middlesex University NHS Trust and Cambridgeshire Community Services NHS Trust.