Part of urea and electrolyte profile

Sodium may be falsely elevated if samples are taken from saline drip sites.

Pseudohyponatraemia is a rare phenomenon where sodium measurement is artificially low, due to presence of hyperlipidaemia or hyperproteinaemia

Reference ranges:

Age range Reference ranges (mmol/L)
All ages/sexes 133 - 146

Derived from Pathology Harmony 2011

Other Comments:

For more information, please see the following: Sodium - Lab Tests Online

See also: Potassium, Chloride, Osmolality

About This Test

Department: Biochemistry


  • Gel/clotted/lithium heparin (yellow/red/green top)

Add-on requests are accepted

Turnaround Time:

Within 24 hours