I never used it.. but check if this is of any use.
How to Get Blood in Emergency!!
Above table indicates suitability of BLOOD – donor v/s recipient.
Now it has become easier to get the blood we need.
All you have to do is just type "BLOOD and send SMS to 96000 97000" (in India )
EX: "BLOOD B+"
A BLOOD DONOR WILL CALL YOU within minutes!!
So please pass this message to all. It certainly would save many lives.
http://docs.google.com/View?id=dhc973vv_16c7vr25fp Hope this helps. Thanks Yatin.Asif, I maintain a directory of Blood-Donation websites where you can find many blood donors in major cities .. please check this link ..