Coag Sub Page

The Coagulation Laboratory performs routine and specialised haemostasis testing for the diagnosis of bleeding disorders and thrombotic conditions in children. We are actively involved in clinical trials.


The laboratory works in close association with the Haemophilia Comprehensive Care Centre, providing a complete service to diagnose and monitor the treatment of bleeding disorders. This includes factor assays, inhibitor surveillance, platelet aggregation and nucleotides. 


We offer a service to monitor anticoagulants, including warfarin and both unfractionated and low molecular weight therapeutic heparin.


The laboratory provides specialised investigations both to the hospital and to a number of other external health care providers.


 External health care providers can access results here:

Link - Results Portal


Opening Hours


Routine hours

8am-8pm Monday to Friday

Specialist investigations are available 9am-5.30pm Monday to Friday with some particularly complex investigations requiring notice to the laboratory


Out of hours

The biomedical scientist in the laboratory can be contacted via the hospital bleep system.

020 7405 9200   bleep 0596


The Haematology Specialist Registrar and Consultant are available for clinical advice via the hospital switchboard 020 7405 9200.


© 2011 Great Ormond Street Hospital for Children NHS Trust