Some studies have shown that the<unk>  may not have high specificity. Interfering factors with this test are women who are premenstrual, postmenstrual and not taking hormones, or those with sun damaged skin, since all will have increased capillary fragility. However many other studies have shown that the<unk>  has good specificity but a low sensitivity. Therefore, its use as a diagnostic test for dengue is questioned as people who have a negative test may still have dengue. It is no longer used as a classification test for dengue haemorraghic fever in the latest WHO guidance.
Tourniquet test
Laser Doppler imaging
Photoplethysmogram
Perineometer
Draize test
Cold pressor test
Femoral nerve stretch test
Biotelemetry