want to know how can i approach donation centres

[raviconquers]

Hi guys, this is my 2nd post since yesterday! First of all i thank u guys so much for helping me to get AB-ve blood for my uncle who is in serious condition in Basavatarakamma Hospital(banjara hills). I did my best and itseems it still costs around 2-3lakhs and i just want to know how to approach these donation camps???or donation sites... Pls help us.. Thank u so much