When you donate blood will they notify you if you have an STD?

Blood banks in the US must follow the guidelines and restrictions set forth by the Food and Drug Administration (FDA). Blood banks typically only screen for HIV, syphilis, and Hepatitis C. Chlamydia, gonorrhea, herpes, and genital warts cannot be transmitted by blood products and is not a reason for a person to defer or not donate blood. You can find the Red Cross "Blood Eligibility List" on their web site at http://www.redcross.org. If you suspect that you may have an STD, there is free testing available at public health facilities.
It would not be morally responsible to do so.