Table 1. Obligate versus possible... | American Society of Hematology

Table 1.

Obligate versus possible carrier status in hemophilia

	Obligate carrier	Possible carrier
Mother	• Of a son with hemophilia if there is another affected male relative • Of more than 1 son with hemophilia	Of only 1 son with hemophilia
Sister		• Of a male with hemophilia • Of a female carrier
Daughter	Of a man with hemophilia	Of a female carrier
Other relation		• Of a male with hemophilia • Of a female carrier

	Obligate carrier	Possible carrier
Mother	• Of a son with hemophilia if there is another affected male relative • Of more than 1 son with hemophilia	Of only 1 son with hemophilia
Sister		• Of a male with hemophilia • Of a female carrier
Daughter	Of a man with hemophilia	Of a female carrier
Other relation		• Of a male with hemophilia • Of a female carrier