ABSTRACT
PIP: The platelet aggregation test is not useful for cases of coagulation disorders, and this study attempts to identify the situations in which it cannot provide useful information. This platelet test using the Born aggregometer can be used to identify various pathologies of adhesion, aggregation and ADP, as well as anomalous bleeding. This is not the case for thrombic diseases, because platelets are involved only in arterial thrombosis, and because it is impossible to tell whether or not the platelet anomaly indicated by a positive test was caused by the thrombosis itself. Once activated, platelets become refractory to in vitro stimulation with aggregating agents. The test is thus not specific for hyperaggregation syndromes, and should not be considered as an aid in their study. Data gathered in the Udine territory showed that, in most cases, the platelet aggregation test is required in situations in which it serves no real purpose, especially for women treated with oral contraceptives. In the absence of risk factors such as tobacco smoke, age, diabetes and obesity, oral contraceptives should not be denied based on a positive test, which does not prove that a platelet anomaly exists because of the pill.^ieng
