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Oxford University Hospitals NHS Foundation Trust
Clinical Biochemistry

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Also known as: K

Specimen requirements

Sample type: Plasma (Lithium Heparin)

Collection requirements: Specimen should to be received and processed within 24 hours of collection. Results on specimens received more than 24 hours after collection should be interpreted with caution.


Price on application

Turnaround time

Please see Turnaround times

Analytical method

Ion-selective electrode

Analysis undertaken at these site(s)

  • John Radcliffe Hospital
  • Churchill Hospital
  • Horton General Hospital

Reference intervals


All ages: 3.5 - 5.0 mmol/L


All ages: 3.5 - 5.0 mmol/L