A spectrophotometric method for following initial rate kinetics of blood platelet aggregation.


A double-beam recording spectrophotometer was used to assay platelet aggregation. Agonist-induced turbidity changes, at 540 nm, in dilute suspensions of platelets (1 ml, 6-8 X 10(7) platelets) were recorded differentially against a reference cuvette, also containing platelets, as a function of time. The curves obtained showed downward pen deflections… (More)


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