Tourniquet test
![A positive tourniquet test on the right side of a patient with dengue fever. Note the increased number of petechia.](/Images/godic/202502/17/Positive-tourniquet-test1956.gif")
A tourniquet test (also known as a Rumpel-Leede capillary-fragility test or simply a capillary fragility test) determines capillary fragility. It is a clinical diagnostic method to determine a patient's haemorrhagic tendency. It assesses fragility of capillary walls and is used to identify thrombocytopenia (a reduced platelet count).