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Biochemistry Kidney Home collection available

Sodium (Serum)

Parameters1 tested
SampleBlood
FastingNot required
Report inSame day

How to prepare

No fasting needed

You can eat and drink normally before the test.

Good to know

No special preparation needed.

Medicines

Tell our phlebotomist about any medicines you take. Don't stop them without asking your doctor.

Comfortable clothes

Wear a loose sleeve so the sample can be taken easily from your arm.

How it works

Book onlinePick a time slot
Home visitSealed, sterile kit
Lab testingBarcode tracked
ReportIn same day

About this test

Sodium controls the water balance of the body and is needed for nerves and muscles.

Why is this test done?

  • Check dehydration
  • Find the cause of confusion or weakness
  • Monitor BP and heart medicines

Symptoms — when should you get tested?

  • Confusion or drowsiness
  • Weakness
  • Nausea
  • Muscle cramps

Normal range

Adults 135 – 145 mEq/L

Reference ranges differ slightly between labs, methods, age and sex. Always discuss your report with your doctor.

If your result is high

High sodium usually means dehydration.

Common reasons
  • Not drinking enough water
  • Fever, sweating, diarrhoea

If your result is low

Low sodium (hyponatraemia) is common in older people and can cause confusion and falls.

Common reasons
  • Diuretic tablets
  • Vomiting or diarrhoea
  • Heart, liver or kidney failure
  • Drinking too much water

How is the test done?

  1. 1
    Book online

    Choose your slot for home collection or a visit to our centre.

  2. 2
    Blood sample taken

    A trained phlebotomist takes a small blood sample from a vein in your arm with a sealed, single-use needle. It takes about 2 minutes.

  3. 3
    Tested in our lab

    Your barcoded sample is tested on automated machines with strict quality checks.

  4. 4
    Report on WhatsApp

    A pathologist checks the result and the report reaches you on WhatsApp and email.

Frequently asked questions

No fasting is needed for this test. You can eat and drink normally.

Your report is usually ready in same day after the sample reaches our lab. We send it on WhatsApp and email, and you can also download it from the Reports page.

Please call our team to confirm whether home sample collection is available for your location and test.

This test needs a blood sample. No special preparation needed.

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