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HSL Virology

HSL Virology provides a modern, rapid and fully comprehensive clinically-led diagnostic and reference service. Clinical services include transplantation, HIV medicine, genito-urinary medicine, infectious diseases, stem cell and solid organ transplant, haematology and oncology, renal dialysis, hepatology, obstetrics and gynaecology, paediatrics, neurology and occupational health.

The service is highly automated, and has an extensive repertoire of serological- and molecular-based tests. It can identify a wide range of viral infections, and monitor viral load levels in patients undergoing antiviral treatments for infections such as HIV 1 and 2, hepatitis B, hepatitis C and cytomegalovirus. We provide a multiplex viral respiratory molecular assay, and a multiplex viral gastroenterology molecular assay to assist in the management and control of infection in the clinical setting.

We also provide an antiviral drug resistance service for patients undergoing treatment for HIV, hepatitis B, hepatitis C and cytomegalovirus, serve as a national reference centre for the diagnosis of congenital cytomegalovirus infection – testing neonatal blood from Guthrie cards – and carry out DNA testing for bacteria associated with sexual health.

This department is a leading site for the training of biomedical scientists, clinical scientists and medical doctors including FY2 trainees and specialty registrars. The department also holds the IBMS pre- and post- registration training approval for completion of the IBMS Registration Portfolio and Specialist Diplomas. HSL Viral Serology is a UKAS Accredited Medical Laboratory No. 8169; HSL Molecular Virology is a UKAS Accredited Medical Laboratory No. 8059.

General enquiries

Phone: 020 7307 9400



Antiviral Resistance

Molecular Pathology (non HIV,HCV, HBV)

Blood Borne Viruses PCR (HIV, HCV, HBV)

Automated Serology

Manual Serology

Out of hours service

For Molecular Virology, out of hours laboratory testing service is not available on after 5.30pm Mon-Fri, and after 5pm on Saturdays, Sundays and Bank Holidays.

For urgent serology, out of hours testing or for clinical advice, please contact the on-call relevant site Virology Consultant via the switchboard:

Barnet & Chase Farm: 020 8216 4600

North Middlesex: 020 8887 2000

Royal Free: 020 7794 0500

UCLH: 020 3456 7890

For services relating to the molecular STI and urgent out of hours bacterial serology services please use above numbers but ask for the Microbiologist consultant on-call.