Soap and water if I think my hands are dirty. If I've basically done nothing since I last washed them, I would rinse under the tap, dry and then test my blood.
I started this because my hands were becoming very dry and the skin was cracking between the fingers and on the knuckles. I thought reducing the amount of chemicals might stop my hands drying out so much. hasn't really worked.
The antibacterial soap stings dry hands and I'd be concerned that the alcohol content would impact.