Can you answer

[scaredhelp266]

How long after your first HEP B Vacc shot will your HBsag turn POS? or will it take until the second shot to turn POS

[cajim]

Likeliness is low.

[scaredhelp266]

Is a  150 day HBsag NEG likely to change to POS?

[scaredhelp266]

Is a  150 day HBsag NEG likely to change to POS?

[stef2011]

hbsag has nothing to do with vaccine, the vaccine has no virus in it, you can only develop antibody not the virus

[scaredhelp266]

So your I dont think so is for my second question?

Thanks

[goofygoatboy]

I don't think so.  Cajim is correct, the point of the vaccine is to give you the antibodies that recognize HBVsAg, that is it should make you HBVsAb positive (Hepatitis B Virus surface Antibody positive) and with a little luck that will prevent you ever becoming HBVsAg positive (Hepatitis B Virus s Antigen positive).

[scaredhelp266]

Is a  150 day HBsag NEG likely to change to POS?

[cajim]

Vaccination is to turn HBsAB to positive, not HBsAg.  About 6 months.