📋 Reference sheet · Reference ranges and unexpected results

The result nobody actioned: failsafe for outstanding tests

The result that fell through the net: who chases it, and who acts when the requester has gone.

One page, every threshold with its number and unit. Written and reviewed by practising UK GPs. Last reviewed 29 Jul 2026.

This sheet puts the whole decision on one page: the thresholds that change what you do, each with its number and unit, and the sources each one was checked against.

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Inside the full sheet 🔒 Thresholds, numbers and units 🔒 Sources checked against the guideline

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Related Ocean Article: The Medical Examiner System and Death Registration. Part of the GP reference sheets, result interpretation one page per test or finding.