Intended for healthcare professionals

Letters Overdiagnosis

Overdiagnosis: interpreting biochemistry results

BMJ 2018; 363 doi: (Published 10 October 2018) Cite this as: BMJ 2018;363:k4195
  1. Jeffrey Barron, consultant chemical pathologist
  1. Brighton and Sussex Medical School, Brighton BN1 9RN, UK
  1. jbarron48{at}

Kale and Korenstein review overdiagnosis in primary care.1 We must remember that, when looking at a marginally raised biochemistry result, the reference range quoted is a 95% range. So, 2.5% of results will be above the upper …

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