This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
Hess test is done to assess - 
Select and explain. 
A. Bleeding time, B. Capillary fragility, C. Clotting time, D. Prothrombin time
B: Capillary fragility
Answer: B: Capillary fragility 
Explanation: Hess capillary resistance test or tourniquet test is done by tying sphygmomanometer cuff to the upper arm and raising it in between diastolic and systolic pressure for 5 minutes.
Presence of more than 20 petechiae over the cubital fossa is considered a positive test.
The test is positive in increased capillary fragility as well as in thrombocytopenia.