With full of courage and trying to do something meaningful on the day i was born 23 years ago, i stepped into the room. Some minor checkup was held since i brought along the red book(the book that was given to the blood donors by Pusat Darah Negara). My hand was pluck with tiny needle to release some blood and dropped into i think is Copper(II) Sulfate(since the solution is blue and Cu2+ in aqueous is blue) test was conducted.
While my father's case is he's 57 this year and last date he donated blood was back in 2005. The personnel said NO to him also. She said that, for people age 50 and above, they have to do annual blood donation. Once they skipped, they are not allowed to donate their whole life. I couldn't find any explanation to that besides my own theory where the ability of the red blood cell to carry oxygen decreased and the quality of the RBC decreased as well. Dunno.. I left my books more than half year. So both of us went back disappointingly. I thought we can have the KFC voucher which will be given to the donors as our dinner.