I plan to go apheresis also - which one do you need to go based on this:
http://www.hsa.gov.sg/publish/hsapo...donation/what_to_donate/whats_needed_now.html
based on the type, some you can do every month, some you can do once in 4months.
up for the nite. nt all people can go apheresis, muz have big vein...