This site is intended for healthcare professionals

Go to /sign-in page

You can view 5 more pages before signing in

Hess test

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

In this test the intracapillary pressure is raised by occluding veins with a tourniquet. A positive test is indicated if petechiae develop - in general this occurs in patients with thrombocytopaenia, small vessel abnormality and impaired platelet function - but it may also occur in normal individuals.


Related pages

Create an account to add page annotations

Add information to this page that would be handy to have on hand during a consultation, such as a web address or phone number. This information will always be displayed when you visit this page