This is going to sound weird...
I can have my maternal serum testing anytime after 10 weeks. It will tell me probability of Downs etc.
The clinic that takes the blood near my house is only open Wed and Fri, so I could go tomorrow, when I am only JUST 10 weeks along, or Friday, when I'm 10 weeks 2 days.
Will the testing be more accurate if I wait longer? I want to get the results before Monday so I can tell other mums on a night out!
I don't think it will make much difference. Silly thread, I'm sure nobody will reply...