16 to 22 weeks.
Yes | No Thank you! It depends; usually somewhere between 18-22 weeks. I found out at 20 weeks (to the day). For the most part, the farther along you are, the more accurate they can be. There's an old wives way of guessing the gender that's actually fairly accurate--the baby's heartrate. The dividing line is 155 BPM; below that it's a boy, above it it's a girl. well normally they like to wait till you get an anatomy scan ultrasound at 18 weeks. they can tell earlier than that but most of the time they are wrong up until 18 weeks the later you wait the more accurate it will be. posted 05/12/2008 by aiden.ezequiel. If the doctor took a sample of the amniotic fluid he could tell. Because there is DNA in the amniotic fluid. But someone can usually guess at 16 weeks on an ultrasound and 20 weeks a person can usually tell for sure.  Ultrasounds that are performed when you are around 16 to 22 weeks may be able to determine your baby's gender. The ultrasound isn't only used to determine gender; the ultrasound technician will be looking for physical abnormalities on the baby, checking the location of the placenta, and measuring your baby's growth. I read on the wall at the ultrasound imaging place that they can tell as early as 12 weeks. Some places will hold the sex until you are 20 weeks along, though. (Meaning they won't fax the gender to your doctor until you are 20 weeks along!) Everywhere is different. Best Answer: 16 weeks is really the bare minimum. There are women on here who claim they found out earlier than that but they really just got lucky. All baby's genitals look EXACTLY the same until around 13 weeks, then they start forming the gender specific parts. Anything before 16 weeks is only about 55-60% accurate. Between 16-18 weeks it's 75% accurate, and after 18 weeks it's as accurate as it's going to be. Most doctors don't even do the ultrasound where you find out the gender until between 18-22 weeks. I'm an ultrasound technician, so that's just what I know from school & my job experience. I read on the wall at the ultrasound imaging place that they can tell as early as 12 weeks. Some places will hold the sex until you are 20 weeks along, though. (Meaning they won't fax the gender to your doctor until you are 20 weeks along!) Everywhere is different. Vaginal Ultrasounds are the most accurate and can tell you at even 12 weeks, with a regular tummy ultrasound they usually can't tell until at least 16 weeks, but try to schedule your ultrasound around 20 weeks so everything is clearer. Congrats on your pregnancy! 5 years ago. Vaginal Ultrasounds are the most accurate and can tell you at even 12 weeks, with a regular tummy ultrasound they usually can't tell until at least 16 weeks, but try to schedule your ultrasound around 20 weeks so everything is clearer. Congrats on your pregnancy! Report. 99% of the time, no you can not tell the sex of the baby at 3 months (12 weeks), unless you get testing done. Usually doctors wont even look until after 16 weeks, but most usu … ally at the 20 week scan when it would be a lot easier to tell, and they could give you a more certain answer. 18 people found this useful. You have to wait until 18 weeks so just over 4 months, anytime before that and the baby's genitalia looks similar. At any point before the 18 weeks the doctor can't tell what … gender it is. Yes | No Thank you! Our OB told us at 12 1/2 weeks we were having a boy, and at 21 weeks we found out that we were actually having a girl! Turns out there is no way to tell prior to 13-14 weeks because they all have a genital tubercule, which later turns into the sex organs for either gender. posted 04/24/2008 by MommyToBrooklyn.  Most patients undergo an ultrasound at around 18-20 weeks (about four and a half to five months). Normally, at this stage of pregnancy we can determine the baby's sex, but not always. We usually do this test at around 16 weeks, so in this instance, the mother can find out the baby's sex a little sooner.
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how many weeks pregnant can you determine gender