I have Masters degree with Distinction and Student of the Year Prize in Corrosion of Engineering Materials from Imperial College London, first degree in Chemistry from University of Central Lancashire and also did Technology, Material Science and Engineering and Mathematics from the Open University.
In areas where tattooing is not as closely monitored, people are asked to wait for 12 months to give blood after getting a tattoo. This waiting period ensures that the donor is free of any potential blood-borne diseases which could have been passed on unsanitary equipment.
If it is not licensed, you need to wait 12 months after getting a tattoo to give. You can donate if you are now feeling well and it has been at least 48 hours since you took the aspirin or aspirin-containing product. Aspirin, acetaminophen and ibuprofen will not affect a whole blood donation.