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Alternative names, keywords |
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Samples required |
Samples must be analysed or processed in the laboratory within 4 hours of venepuncture. |
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Test indications |
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Reference range |
< 20 seconds Source: locally determined. |
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Turnaround time |
1 working day |
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Enquiries |
Haematology (Coagulation) |
Trisodium citrate blood (blue cap, 3.5 mL tube) taken with minimal stasis, filled to the line. Smaller tubes are available for paediatric samples.