The clinical and haematological heterogeneity in cases of the rare combined
factor V and VIII deficiency has not been reported so far from India. Nine
such cases belonging to five unrelated families have been analysed in the
present study for the various haematological and clinical parameters. A ver
y mild clinical presentation is seen in all these cases. The clinical manif
estations, however, do not correlate with the plasma levels of these factor
s.