C.D.
My son did it when he was 6 I think it was. I know my friends daughter has a different pediatrician she hasn't ever had any tests like this. Personally, I'd rather have them do the tests (since they aren't too invasive and it is all done in one shot) so I can detect early if something is wrong. My son also plays sports year round so I don't know if that has anything to do with it but I still like the peace of mind. Also, when you make the appt to draw the blood let them know that they are kids and will be 1st time they've done anything like this. When they did Shaun's they were really nice and he actually told us that it wasn't as bad as we had let him to believe:-) Good luck.