Family pedigrees of the 6 FV-deficient probands analyzed in this study, showing FV levels and segregation of the identified mutations. Plasma coagulant (percentage), immunoreactive (percentage), and intraplatelet (percentage per 10⁹ platelets) FV levels are indicated in this order below each symbol. The normal ranges for the 3 assays were 58% to 140%, 64% to 139%, and 0.1% to 0.3%/10⁹ platelets, respectively. * and ‡ mark previously reported mutations^20,32,33 ; n.d., not done; and n.a., not available.