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Clinical Pathology Kidney Home collection available

Potassium, Random Urine

Parameters1 tested
SampleUrine
FastingNot required
Report inSame day

How to prepare

No fasting needed

You can eat and drink normally before the test.

Good to know

Collect the first morning urine sample in the sterile container we give you.

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

This test measures potassium in a single urine sample. It helps find whether low or high blood potassium is due to the kidneys losing or holding potassium.

Why is this test done?

  • Find the cause of low or high blood potassium
  • Check effect of water pills
  • Investigate kidney and adrenal problems

Symptoms — when should you get tested?

  • Muscle weakness or cramps
  • Irregular heartbeat
  • Tiredness

Normal range

Random urine 25 – 125 mmol/L

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

If your result is high

High urine potassium with low blood potassium means the kidneys are losing potassium.

Common reasons
  • Water pills (diuretics)
  • Excess aldosterone
  • Kidney tubule disorders

If your result is low

Low urine potassium with low blood potassium suggests loss from the gut or poor intake.

Common reasons
  • Diarrhoea or vomiting
  • Poor diet
  • Laxative use

How is the test done?

  1. 1
    Book online

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

  2. 2
    Give a urine sample

    Collect a mid-stream urine sample in the sterile container we give you (first morning urine is best).

  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 urine sample. Collect the first morning urine sample in the sterile container we give you.

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