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Blood Sciences

Blood Test Information

Whole Blood Potassium
 

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Tube type: Lithium Heparin

Reference range
3.0 - 5.0

Units
mmol/L

Turnaround Time
1 day

Department: Biochemistry

Clinical Application
As potassium has a much higher intracellular concentration than extra-cellular concentration, factors which increase the amount of intracellular potassium leaking into extra-cellular fluid may cause a falsely high result. E.g. an old or haemolysed sample. Whole blood potassium is sometimes used in the investigation of high serum potassium measurement.

 
 

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