GSTT Reference Ranges

On 5 October 2023, Guy’s and St Thomas’ and King’s College Hospital NHS Foundation Trusts jointly introduced a new electronic health record (EHR) Epic and a new Laboratory Information Management System (LIMS) Beaker.

As a result, there have been changes to some reference ranges for our service users. Details of these changes can be found below.

*Please note: Reference ranges, changes and critical phoning limits on this page are for use from October 5 onwards.*

Haematology

The following changes are applicable to clinicans at Guy's and St Thomas' Hospitals and for GP practices in Southwark and Lambeth.

Biochemistry

These changes that are relevant for clinicians at Guy's and St Thomas' Hospitals (GSTT) and for GP practices in Southwark and Lambeth.

Immunology

The following changes are applicable to clinicians at GSTT, KCH and primary care in south east London.