What Screening Is Done on Your Blood? After you have donated, your blood will be tested for syphilis, HIV (the virus that causes AIDS), hepatitis, and HTLV (human T-lymphotropic virus), which can cause a blood or nerve disease.
If donated blood appears to have HIV or any other abnormality, the donor will be notified within a few weeks. This may be by letter or telephone. It will be necessary to be tested again to confirm that the first test done was accurate and not a false positive.
Blood is tested for:Hepatitis B virus.Hepatitis C virus.HIV-1 and HIV-2.HTLV-I and HTLV-II.Syphilis.West Nile virus.Trypanosoma cruzi, the infectious agent causing Chagas' disease.Babesia – in states where testing is required by FDA guidance.