Full blood count (FBC)

Written by Craig Webster on .

Full Blood Count

A full blood count consists of haemoglobin, total white cell and differential counts, platelets and full red cell indices. All of these values are provided using a single EDTA sample. Please note that if venepuncture is difficult and mixing with anticoagulant delayed, micro-clot formation may cause a falsely low platelet count.

 

Erythrocyte sedimentation rate (ESR)

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ESR

This is the standard haematological inflammatory marker, performed in the laboratory, although CRP is the preferred test (Biochemistry request).  The ESR may be performed on the same EDTA sample sent for FBC if sufficient.

Referred Tests

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Referred Tests

The following referred tests should be requested on a Haematology request form and the Department will make arrangements to send the sample on.

Abnormal Haemoglobinopathies

The Department offers a comprehensive haemoglobinopathy screening service, however occasionally samples are referred for further analysis or confirmatory testing. Laboratory staff will refer samples if appropriate.

Unidentified haemoglobin variants

Haematology Department
Haemoglobinopathy Laboratory
Central Middlesex Hospital
Acton Lane
London
NW10 7NS
 
or
 
High risk alpha thalassaemia
 
Molecular Haematology Department
John Radcliffe Hospital
Headley Way
Headington
Oxford
OX3 9DU

Pyruvate Kinase

Pyruvate Kinase assays are referred to Hammersmith Hospital. Please discuss with a Consultant Haematologist prior to requesting this test.

Special Haematology
Haematology Department
Hammersmith Hospital
Du Cane Road
London
W12 0HS

Positive Malaria Results

When a positive malaria result is obtained we are required to refer blood films to the Malaria Reference Laboratory.

London School of Hygiene and Tropical Medicine
Keppel Street
London
WC1E 7HT
 
 

Dye Binding Test for Hereditary Spherocytosis (EMA)

 
Haematology Department
Birmingham Childrens Hospital
Steelhouse Lane
Birmingham
B4 6NH
 
 

ADAMTS13

University College Hospital London
235 Euston Road
London 
NW1 2BU