Should I re-test ?

[Alex2012]

Hello. I'm a little concerned about my odds of having general STD's, mainly HIV. I had a girlfriend during two and a half years and we never used condoms (we did all kinds of sex). Two months after we broke up, I did testing for HIV, Hepatitis B and C and sifilis. All came back negative. The HIV testing I did was the one which also tests for p24 antigen (I think it's the fourth generation one).

By that time my ex-girlfiend was studying to be a doctor and once she told me that she was poked in her hand by a needle while suturing a patient. She said it didn't bleed and that's the reason she didn't do anything about it. I'm a little worried  about that episode now and thinking if I should re-test (it has been 8 months since we broke up now).

Since we broke up, I didn't have any sexual contact. Should I get tested again? Thank you.

[Alex2012]

I did some research on my country's government health web site and I've found out that they recommend the test for HIV to be made after 60 days (Brazil). It also says that cases where a test will give a false-negative after this time is extremely rare, and mainly happen when the person already has some immunologic problem. It is also said that a test within 45 days will have 99,99% accuracy.

Also, I've found out the following guidelines concerning for Hepatitis B and C window period:
Hepatits B: 30-60 days.
Hepatits C: 49-70 days.

Since Hepatits C is not really an STD I don't need to worry much about it.

Finnaly, since my immune system has allways been very good (I generally get, at most, a cold once every two years and it doesn't last more than three days) I'm confident that I would develop anti-bodyes within the lowest window period.

Given all that I won't worry anymore.

Thanks for help.

[RainLover71]

3 Months post-exposure is conclusive.