This site is intended for healthcare professionals

CPD
CPD
Pro
Pro
account_circleSign in
Go to /sign-in page

You can view 5 more pages before signing in

Go to /pro/cpd-dashboard page

This page is worth 0.05 CPD credits. CPD dashboard

Go to /account/subscription-details page

This page is worth 0.05 CPD credits. Upgrade to Pro

Disaccharidase test

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

Deficiency of small bowel disaccharidase activity can be tested in the following manner:

  • 50 g of the appropriate disaccharide e.g. lactose is given orally in 500 ml of water
  • the blood glucose response is determined by serial measurements
  • the control test is performed on the next day when 25 g of each of the constituent monosaccharides is given orally and the blood glucose response is monitored

Significant reduction in the area under the blood glucose response curve when the disaccharide is given indicates disaccharidase deficiency.

Hydrogen breath tests may be used to detect the bacterial metabolism of malabsorbed disaccharides.

Related pages

Create an account to add page annotations

Create a free account

Annotations allow you to add information to this page that would be handy to have on hand during a consultation. E.g. a website or number. This information will always show when you visit this page.