[Standardization of ADP-induced thrombocyte aggregation]

It is the purpose of this study to standardize platelet aggregation according to the method of Born. It was found that aggregation is influenced by the time of storage, the pH and temperature of plasma. However, there is no significant correlation between platelet number versus aggregation in healthy subjects. To get reproducible results, the plasma samples should be investigated within 2 hours after venipuncture. During storage temperature of all samples should be constant.