[Measurement of spontaneous platelet aggregation in citrated whole blood by application of the hematologic automatic Coulter S plus VI].

A method for measurement of the spontaneous platelet aggregation in citrated whole blood (SPAV) was tested using the Coulter Counter S plus VI and a simple mechanism for sample rotation. The underlying principle of the procedure consists in the sequential measurement of the decrease of free platelets in a specimen of citrated whole blood which ist rotated at 37 degrees C for 20 minutes. SPAV offers advantages compared to other methods for spontaneous aggregation in platelet rich plasma. First experiences about application of the SPAV-procedure are presented.