Polycythaemia

A/Prof John Gibson, PhD, FRACP, FRCPA.
Professor Gibson is a Senior Staff Haematologist, Institute of Haematology, Royal Prince Alfred Hospital.

Dr Claire Weatherburn, MBBS, BAppSc.
Dr Weatherburn is an Advanced Trainee in Haematology, Royal Prince Alfred Hospital, NSW.

INTRODUCTION

TRUE polycythaemia is defined as an absolute increase in the body’s red cell mass.

In the full blood count, this is reflected as an increase in the

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