Q: Can a doctor be wrong on predicting the baby's gender? When is the best time in pregnancy to be sure?
A: Doctors can not be 100% accurate on gender unless DNA testing has been performed. Gender ultrasounds done after 20 weeks are about 88% accurate and the "Jack and Jill" blood test done around 13 weeks is almost 99% accurate. Do not waste your money on the over the counter urine tests - every patient of mine that has taken one was told they were having a boy even if they had a girl.....it is probably 50% accurate because half the time people actually have boys!