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How accurate are late dating scans


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In short, no scans that...

Welcome Active Popular Browse. Are late scans accurate for dating? I went for my morphology scan yesterday supposed to be 19 wks 4 days and it How accurate are late dating scans out that Im only 16 wks 3 days??? Any opinions greatly received Thanks! Posted Saturday 05 March Baby shower games hCG levels chart Baby eye colour predictor Implantation bleeding.

From my understanding, any scan after 10wks is not overly accurate for dating, but I could be wrong. In short, no scans that late are not accurate for dating. If you know the date of your LMP and length of cycle then that will give you an accurate date.

Babies measuring small at 20 weeks just says you have a small baby in there. Out of curiosity what was the birthweight of your DS?? I had the same thing happen with my DD. At the 20 weeks scan she measured 17 weeks and they made me go back in 2 weeks when she measured 19 weeks. They tried to push my dates back but like you I knew when my LMP was and cycle length and I had had a scan at 9 weeks which was right for my dates. DD was born at 39 weeks weighing in at a whopping 4lb 11 or g tongue.

No scan for dating is always right. Mine have being cause i knew my last AF and how long it went for. If you are concerned ask you doctor and see if you can have another scan done at a later date. Nodrog New Zealand Total posts: It seems pretty unlikely that you would ovulate 3 weeks How accurate are late dating scans

I know most doctors say...

My midwife said any scans after 12 weeks aren't accurate as by then the genetic differences will have started to show eg I'm 5 ft 9 and DH is 6 ft 3 so our baby is likely to be bigger than someone who is 5 ft 2 with a partner of 5 ft 9 IYKWIM. With my current pregnancy I knew my LMP date but didn't get a positive test until over a week after AF was due, it turned out that I ovulated a week late.

But as I said earlier it is pretty unlikely that you would have ovulated 3 weeks late without noticing as that is a week after your AF should have shown up. Two bouncy boys New Zealand Total posts: No as acurate but neither is going off the date of your LMP With it so far out they will probably go off the new date. I know the exact date of my last LMP but I know I wasnt preg just opver 2 weeks ago but if im preg now im on day 68 of my cycle witch would How accurate are late dating scans me like 8 - 10 weeks pregnant when I would really be no more then 5 weeks.

With my last pregnancy I knew the dates of my LMP and went for a dating scan which showed a 4 week difference in dates. It turned out that AF had just not arrived the previous month so my LMP was actually 6 weeks prior to her being conceived making a 4 week How accurate are late dating scans if that makes sense?

I have been told typically scans can be up to 10 days out either way especially later in pregnancy so i'd so maybe you are due somewhere in the middle? Maybe around the 18 week mark? Also did it show on your 12 week scan? Posted Sunday 06 March I did not have a 12 week scan This is my first scan. The sonographer actually said that my GP was naughty, and that everyone should have a dating scan regardless of knowing their lmp dates etc. As for my previous babies, they were both small at 7lb8 and 7lb5, so I'm not expecting anything huge anyway.

Im just wondering if anyone knows if the scans actually take into account the 2 weeks PRIOR to conception included in the 40 weeks duration They do factor in the 2 weeks. In NZ it is quite unusual to have a dating scan, while in OZ it seems to be the norm.

I wonder why it is so different!?! I live in NZ and had a dating scan and most people I know have them now all you have to do is ask for one.

For example, I remember driving from Brisbane to gold coast and back within an hour and got back home and slept straight for "How accurate are late dating scans" rest of the day this was before I found out I was pregnant and I usually cannot sleep during the day and feeling constantly tired and EXTREMELY dizzy and this would have been when I was approximately 3 weeks pregnant 1 week gestational???

Not usually noticeable at 3 weeks I don't think. Also, I had recorded quite strong movements at approx 14 weeks I have had two previous pregnanciesbut going by these new dates, i would have been 11 weeks???

I doubt it, and cause I know How accurate are late dating scans movements to look out for, I know it was not gas etc. All I can do is let it go and wait I suppose. I know I will be very pissed if I get to the end and find that bub is overcooked.

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Posted Monday 07 March A dating scan is the best way to predict your due date of your pregnancy if you think your baby is late. In your experience, how spot on are these late pregnancy ultrasounds? How accurate are the ultrasounds done in the beginning? They based. I know most doctors say the sooner the better for a dating ultrasound. But my doctor didn't book me an ultrasound until the end of march.

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