Singapore General Hospital will NEVER ask you to transfer money over a call. If in doubt, call the 24/7 ScamShield helpline at 1799, or visit the ScamShield website at www.scamshield.gov.sg.

Help Us Improve Your Experience:

We’d love to hear from you! Rate the SGH website and share your feedback so we can enhance your online experience and serve you better. Click here to rate us

SODIUM, SERUM

Synonym(s):
Lab Section Category
View write-up
Specimen Required

​3 mL plain blood

Method

​Indirect Ion-selective Electrochemistry

Reference Interval / Value

0 - 12 yrs: 131 - 144 mmol/L
≥ 13 yrs: 136 - 146 mmol/L

Turnaround Time

​Mean = 4 hrs, Range: 3 – 5 hrs

Day(s) Test Set up

​Daily, 24 hrs STAT

Change History Notes

  • 01 Apr 2020 09:00 AM

    ​Reference interval is updated on 01 Apr 2020

  • 29 Apr 2013 05:25 PM

    Reference Interval has been last updated on 22 Apr 2013.

Back: Pathology Laboratory Services

Last Updated - 13 Jun 2025