How can i find out if i carry the chromosome mutation for agammaglobulinemia?

Genetic counsellor: There are several possible tests that could be done. Because testing is expensive and highly specialized it needs to be focused on the right target. Depending upon your history and relations with or without disease it may make sense to use one test and not another or not test at all. If this is a real concern i would see your doc for referral to a genetic counsellor.