Pre transfusion sample
7ml EDTA + 10ml clotted
Key Factors known to affect Test Performance or Interpretation
- Samples will be rejected if received more than 48 hours post phlebotomy.
- It is not possible to provide accurate blood grouping on clotted samples or haemolysed samples, including those stored at inappropriate temperatures.
- Small samples must be processed manually and these will only be accepted for young children.
The published turnaround times are applicable to normal working hours only. All routine samples received outwith normal working hours will be processed on the next working day.
RCI Laboratory, NHSBT Centre Newcastle