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haematology users' handbook - University College London Hospitals

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Blood Transfusion (page 2 of 5)<br />

Test<br />

Direct<br />

Antiglobulin<br />

Test (DAT)<br />

Group & Save<br />

Specimen<br />

type<br />

4.5 /7ml<br />

EDTA<br />

4.5/7ml<br />

EDTA<br />

Key Factors affecting<br />

tests<br />

Insufficient, clotted and<br />

haemolysed samples will<br />

be rejected.<br />

Kleihauer 4.5ml EDTA Delay in receiving sample.<br />

Sample not kept at room<br />

temperature before<br />

performing test.<br />

Notes<br />

Can be added onto existing Group &<br />

Save or Haematology FBC sample<br />

>2ml required for adults<br />

>1ml required for neonates (

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