Minimum Retesting Intervals (MRIs) indicate the recommended minimum time before a laboratory test should be repeated for the same patient. They help promote appropriate test utilisation and reduce unnecessary repeat testing.

The MRI criteria used by the Integrated Laboratory, HQE are based on published guidelines, primarily the Royal College of Pathologists' G147: National Minimum Retesting Intervals in Pathology, together with locally established intervals where published guidance is unavailable. If a test is not listed in the table below, no MRI is currently applied.

Repeat requests submitted within the specified MRI will be rejected by the laboratory system.

These intervals are intended as guidance and do not replace clinical judgement. If repeat testing within the MRI is clinically justified, please contact the Medical Officer or Chemical Pathologist, Integrated Laboratory HQE.