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Clinical Pathology Fever & Infection Home collection available

stool reducing substance (Stool R/E)

Also known as: Stool test

Parameters1 tested
SampleStool
FastingNot required
Report inSame day

How to prepare

No fasting needed

You can eat and drink normally before the test.

Good to know

Collect a fresh sample in the sterile container provided.

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 checks stool for sugars that the gut has not absorbed. It is mostly used in children with diarrhoea to look for sugar intolerance, such as lactose intolerance.

Why is this test done?

  • Look for lactose or sugar intolerance
  • Investigate long-lasting watery diarrhoea
  • Check diarrhoea after milk feeds in babies

Symptoms — when should you get tested?

  • Watery, frothy or sour-smelling stools
  • Bloating and gas
  • Nappy rash
  • Diarrhoea after milk

Normal range

Reducing substances Negative

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

If your result is high

A positive result means undigested sugars are in the stool, suggesting sugar malabsorption.

Common reasons
  • Lactose intolerance
  • Gut infection damaging the lining
  • Other sugar malabsorption

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 stool sample

    Collect a small amount of stool in the clean container provided, without mixing urine or water.

  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

A fresh liquid stool sample, tested soon after collection.

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 stool sample. Collect a fresh sample in the sterile container provided.

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