Accuracy of dating sonograms
Sometimes a loop of cord will be confused with a scrotum. If the fetal position is favorable gender can usually be confidently determined by 14-16 weeks. Sometimes however, depending on the babies position in the womb it can be difficult to tell with certainty. Read more It takes a trained eye to be able to see the earliest stages of genital development.
On occasion, it can be difficult to see well enough if the baby is in a "funny" position or if you are quite obese. In the hands of a skilled tech with a high resolution probe this can sometimes be suggestive. Even then, I have seen folks who decorated a nursery based on us have to repaint when baby delivered. Read more If your doctor or technician made an error on your first tri ultrasound, then it would be possible for your edd to be wrong. Fw-300 #ya-qn-sort h2 /* Breadcrumb */ #ya-question-breadcrumb #ya-question-breadcrumb i #ya-question-breadcrumb a #bc .ya-q-full-text, .ya-q-text #ya-question-detail h1 html[lang="zh-Hant-TW"] .ya-q-full-text, html[lang="zh-Hant-TW"] .ya-q-text, html[lang="zh-Hant-HK"] .ya-q-full-text, html[lang="zh-Hant-HK"] .ya-q-text html[lang="zh-Hant-TW"] #ya-question-detail h1, html[lang="zh-Hant-HK"] #ya-question-detail h1 #Stencil . Bdend-1g /* Trending Now */ /* Center Rail */ #ya-center-rail .profile-banner-default .ya-ba-title #Stencil . Bgc-lgr #ya-best-answer, #ya-qpage-msg, #ya-question-detail, li.ya-other-answer .tupwrap .comment-text /* Right Rail */ #Stencil . Bxsh-003-prpl #yai-q-answer, #ya-trending, #ya-related-questions h2. Fw-300 .qstn-title #ya-trending-questions-show-more, #ya-related-questions-show-more #ya-trending-questions-more, #ya-related-questions-more /* DMROS */ .If the fetus is in a poor position for viewing the genitals then no determination can be made. I've heard of more moms being surprised by boys than girls. Read more Sampling the fetal blood or even the amniotic fluid can be done to perform genetic testing. All its organs, muscles, limbs and bones are in place, and the sex organs are well-developed. A good time to determine gender is between 18 and 20 weeks because that is the recommended time to perform a fetal anatomic survey. Read more Genital differentiation is complete by 11-12 weeks but the relative size & positioning of structures may make it difficult to call at that point.At 20 weeks, if the genital region is visible there is a very high level of accuracy for gender determination. In addition to looking for inherited diseases, the sex of the fetus can also be determined. Mr turtle needs to stick his head out to get noticed & that may not happen while the ultrasound is being done. Read more If all agree then gestational age is higher accurate meaning you can probably pinpoint the date of conception.It's important to remember that discussing prenatal tests can be simple or incredibly complicated, depending on the degree of detail that is needed and the point under discussion.
This FAQ is NOT intended to be a full explanation of all the intricacies of taking and interpreting various prenatal tests, but rather a discussion of them as they pertain to large women.
It all depends on the skill of the person doing the scan. Read more Usually, an ultrasound to detect gender around 18 to 20 weeks. This is more accurate but much more risky than an ultrasound. Read more Amniocentesis or chorionic billows sampling can reveal if the fetus is a boy or girl, but this requires a needle placed through the womb to get some fetal cells and check their sex (x and/or y) chromosomes. However, despite this, it is not as good a predictor of the exact date of delivery.
Many other things can influence when the process of delivering a baby.
research any test before deciding whether to use it or not. For more information on prenatal testing, see the FAQs available from info on the Internet.
Testing decisions vary greatly depending on family history, medical condition, parental beliefs, etc.
If you were 12 weeks by LMP and 12 4/7 weeks by sono, you due date would stay consistent with your lmp. Read more Yes, it is possible to image your baby in 3-d and not reveal the gender.