Yes...you can. You can store your own blood for awhile for use for elective surgery. You can also sue the red cross for not testing all their donors blood with pcr testing to rule out lots of stuff.
Then ask God for healing if you get something.
Storing blood for your own use is really not a practical solution. Sure, for planned upcoming surgeries it might come into use, but a lot of blood transfusions involve traumatic accidents which cause a lot of blood loss. No one plans for those, and they use the blood at hand.
Stored whole blood is only good for 56 days, so you have a very narrow window to donate for your own use.
The Red Cross and other blood banks test all blood for infections, so there is very little liability to sue for. The point is that all sexual diseases have their “window” period of early infection during which even sensitive tests may not detect the infectious pathogens in the donor. HIV/AIDS is from 10 days to 2 months. Syphilis is even longer. That’s why the questionnaires are so important.