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.
1 Whole blood donation takes approximately 45 to 60 minutes. 2  Donating plasma or platelets (called apheresis or automated donation) takes about 1 1/2 to two hours. 3  The Mayo Clinic Blood Donor Center in Rochester provides televisions, video on demand and wireless Internet access for donors to use during donations. You can donate whole blood as often as every 84 days at the Mayo Clinic Blood Donor Center in Rochester. 2  Plasma donors may donate as often as every 28 days. 3  Platelets donors may donate as frequently as every eight days, and up to 24 times in a 12-month period.