Plasma and platelet TFPI levels in males, female, and oral contraceptive users.

Individual TFPI levels (ng/ml) in healthy male subjects (m) female subjects (f) and oral contraceptive users (OC) are shown in PPP (panel A) and PPP from activated PRP (250 x 109 platelets/L) stimulated by convulxin (50 ng/mL) (panel B). TFPI release from each individual is shown. Mean released TFPI levels in platelet supernatants adjusted to a platelet count of 250 x 109/L are shown (Panel C). Averages of duplicates and mean TFPI levels are shown. * P-value < 0.01, ** P-value< 0.001.