📋 Reference sheet · Infection and serology

Someone else's result: cascade testing and contact management

A relative's diagnosis arrives in your inbox. Cascade testing, and who you may contact.

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: Haemochromatosis · also Breast Cancer - Family History, Whooping Cough (Pertussis), Lynch Syndrome: An Overview of Cancer Risks, Meningitis – Bacterial and Meningococcal Disease, Chlamydia, Familial Adenomatous Polyposis (FAP). Part of the GP reference sheets, result interpretation one page per test or finding.