Hep B Surface Ag - Presumptive positive?

I just get lab results here:

Hep A Ab, Total - Negative
Hep B Surface Ag - Presumptive positive
HBsAg Confirmation - Negative
Hep B Core Ab, Tot - Negative
Hep B Surface Ab - 33.7H mIU/mL - Consistent with Immunity

Hep C Virus Ab - Non-Reactive
HIV-1 Abs, Qual - Non Reactive

Does the result mean that I am infected with Hepatitis B? or Can I get infected with Hepatitis B?
Is there any possibility that my Hep B Surface Ag will be negative? How much is the probability?
If I am married and have children, will my wife and children be infected also?

Thanks,

Mike

[willing]

well the good news is no evidence you've ever been exposed to HepA, hepC or HIV virus. Also, it looks like you had two tests for the HBV surface antigen and the second came back negative. Your profile is that of someone successfully vaccinated against HBV (<a href="http://www.dpcweb.com/medical/infectiousdisease/hepatitus_b_us.html">see</a>). If you have any doubts you should obviously pursue this with a Dr. and test further, but from what you wrote there doesn't seem to be anything to worry about.

[darrinwade]

it sounds to me like you might have had it but cleared it on your own  yes if you have a wife and childern i would have them tested i know if you were HBVsAG pos then you have hep b

[SimplyE]

My hep test came back
hep a Ab, Igm Non Reactive
Hep B Surface Ag Positive
Hep B core Ab, Igm Reactive
Hep B core Ab, Total Reactive
Hep B Surface Non reactive
Hep C Ab Negative

Please tell me what does this all mean?

[stef2011]

hbsab positive or higher than 10 is immune

hbsag positive is infected with hbv