Abstract
Using human platelets isolated from their plasma, we showed that 15‐hydroperoxy‐eicosatetraenoic acid (15‐HPETE) inhibits platelet aggregation induced either by arachidonic acid or prostaglandin H2 analog. 15‐HPETE does not modify platelet prostaglandin and thromboxane formation from exogenous arachidonic acid but does decrease platelet lipoxygenase activity.