Posted: Sat Feb 20, 2010 - 10:42 PM

Hi,
I was wondering if anyone could help me out with my problem:

The other day I went to the nurse to have a blood test prior to Hep B immunisation. The blood test i was due to have was the Hep B surface antigen (HBsAg) test. I was also due to have the first of my three Hepatitis B vaccinations.

However, the nurse insisted that i had the vaccination before the blood test, saying that it did not matter which way round I had them done.

Does anybody know if having the vaccination BEFORE having the blood test will make the results of the blood test invalid? I'm really worried that because i had just had the vaccination, the results will show that i am currently infected with Hep B. I need these results to be correct because i'm due to start studying medicine.

Thanks.