Hi ladies, I have some 25 miu sensitive HPTs. Do you think they can give a 3/4 days after implantation or does it take longer to build up 25miu hcg? Can anyone give me some sort of a breakdown on how many miu of hcg there will be each day past implantation? Thanks a lot for any help. I know I am getting crazy but I really need to clear this up.. - Amy.