Hess test

FREE subscriptions for doctors and students... click here
You have 3 more open access pages.

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.

Last reviewed 01/2018