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Doctor insights on: Can Ultrasound Be A Month Wrong

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Is it possible for Ultrasound to be wrong by 2 months?

Is it possible for Ultrasound to be wrong by 2 months?

Are you: Referring to estimating dates in pregnancy? Ultrasounds are operator dependent and therefore accuracy is related to the experience and skill of the sonographer. That having been said, dates being off by 2 months would be highly unusual and unlikely. ...Read more

Dr. Michael Gabor
2,270 Doctors shared insights

Sonogram (Definition)

An ultraound, also known as a sonogram, is a painless and relatively inexpensive imaging test that utilizes sound waves instead of ionizing radiation. There are no side effects. Ultrasound can give us two-dimensional, and in some applications three-dimensional, images of structures and organs in virtually any part of the body. In addition to diagnostic uses, such as evaluating abnormalities in the abdomen, pelvis, and breast, ultrasounds are commonly used to guide needle and catheter placement in a variety of surgical ...Read more


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All my life my testicles use to hang low. Now for the last 2 months they hang high all the time. Ultrasound normal. What is wrong?

All my life my testicles use to hang low. Now for the last 2 months they hang high all the time. Ultrasound normal. What is wrong?

Happens: Could be as simple as lower ambient temperature and testicles trying to get closer to the core. As long as US is normal and u have no pain or redness, I wouldn't worry about it. ...Read more

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25 months post ulna shortening op. Arm still swollen & ultrasound today states there is no fluid. What could be wrong? What should I do next?

25 months post ulna shortening op. Arm still swollen & ultrasound today states there is no fluid. What could be wrong? What should I do next?

Go back to ortho: You shouldn't be having swelling secondary to the operation over two years post procedure. Go back to the person who performed the operation and discuss your concerns with him. ...Read more

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Experiencing abnormal vaginal bleeding for almost a month. I had an ultrasound done, everything turned out fine. What's wrong with me!

Experiencing abnormal vaginal bleeding for almost a month. I had an ultrasound done, everything turned out fine. What's wrong with me!

Cannot diagnose: You were hopefully seen by a gynecologist. Ultrasound is not the only modality that can be used for diagnosis. If you have not been fully assessed and do not have a satisfactory explanation for your bleeding you may need a second opinion, but the internet is not the place in which to get it. Good luck. ...Read more

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Lower left ovary is killing me. Had an ultrasound months ago told everything was fine. Intestines are working fine no signs anything there is wrong.?

Lower left ovary is killing me. Had an ultrasound months ago told everything was fine. Intestines are working fine no signs anything there is wrong.?

Follow up: If you had an imaging study that did not answer the question, it either is not something that can be answered by that imaging study, or is not something that will be identified by imaging. Ultrasound is only one type of imaging test. CT scan may be helpful if your doctor thinks that it will assist him/her. ...Read more

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Why won't my gynecologist do a ultrasound before 5 or 6 months, or blood hcg? They said they only will earlier if something seems wrong.

Why won't my gynecologist do a ultrasound before 5 or 6 months, or blood hcg? They said they only will earlier if something seems wrong.

Ask your OB: Ultrasounds can be very helpful in pregnancy when done properly. An early ultrasound done at 7-8 weeks will help establish your due date and reassure us that the fetus is starting to develop normally. Later ultrasounds will help evaluate normal growth and development. Blood HCG testing is normally done when there is significant concern about miscarriage. ...Read more

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14 months ago I had scrotal ultrasound for tc. Came out clear. Bus as tc is rare, could the doc have read the images wrong due to inexperience?

14 months ago I had scrotal ultrasound for tc. Came out clear. Bus as tc is rare, could the doc have read the images wrong due to inexperience?

Scrotal Ultrasound: Information is limited - why the ultrasound was done? Ultrasound is excellent in detecting a testicular mass. It may not always differentiate benign from malignant tumors. Ultrasound is always operator dependent.. ...Read more

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No period for last 3 months. Feel like I'm going to start & don't. Been to gyn, blood wk and ultrasound normal. Still worried? What could be wrong?

No period for last 3 months. Feel like I'm going to start & don't. Been to gyn, blood wk and ultrasound normal. Still worried? What could be wrong?

Many possibilities:: The hormones that control your menses can be affected by numerous factors and result in Amenorrhea: Stress, Poor nutrition, Depression, Certain drugs, Extreme weight loss, Over-exercising, Ongoing illness, Sudden weight gain or being very overweight (obesity), Hormonal imbalance due to polycystic ovarian syndrome (PCOS), Thyroid gland disorders, Tumors on the ovaries or brain. Http://cle. Clinic/1pxLG2B ...Read more

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Four months ago total and direct bilirubin was elevated. Now normal. Fibroscan ultrasound and CT found nothing wrong with liver. What was it???

Four months ago total and direct bilirubin was elevated. Now normal. Fibroscan ultrasound and CT found nothing wrong with liver. What was it???

Not sure.: And unless it recurs, you'll probably never figure it out. Sometimes that pattern of abnormal liver tests can occur when someone passes a gallstone. There could be many reasons other than that, however, and no further testing is necessary as long as the labs have returned to normal. Good luck. ...Read more

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Left breast swollen and sore for two months. Armpit swollen to. Drs can't figure out y.Breast ultrasound normal. What's wrong and what's next?

Left breast swollen and sore for two months. Armpit swollen to. Drs can't figure out y.Breast ultrasound normal. What's wrong and what's next?

Many things: Can cause your symptoms. Fibrocystic disease, infection and other entities can present this way. Primary breast cancer however is exceptionally rare in women your age. ...Read more

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Could the ultrasound be wrong about my baby's sex?

Could the ultrasound be wrong about my baby's sex?

Maybe: There is absolutely a chance that an ultrasound could show the incorrect gender. Even with the best equipment and the most
experienced ultrasound technologist, errors can be made. An ultrasound is most accurate in determining the gender at approximately 20 weeks gestation. Occasionally, the ultrasound technologist confuses the umbilical cord with a penis and declares the baby boy. The more common error is made when the ultrasound technologist fails to identify a penis and determines that the baby is a girl. Sometimes if the baby's thighs are crossed, determining the genital anatomy is nearly impossible. However, if an experienced ultrasound technologist gets a good view of the anatomy they will be a right nine times out of ten. ...Read more

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Could an ultrasound at 13 weeks be wrong & you could actually be 17 weeks?

Could an ultrasound at 13 weeks be wrong & you could actually be 17 weeks?

No: There variability in the ultrasound measurement results would be about one week. If the baby is growing normally the ultrasound estimate would not be off/ incorrect by 4 weeks. ...Read more

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How accurate are 12 week ultrasounds with gender? They were incorrect with my last child so just want to know if they are most likely wrong again?

How accurate are 12 week ultrasounds with gender? They were incorrect with my last child so just want to know if they are most likely wrong again?

Not very accurate: The accuracy will vary depending on the experience of the sonographer and the ability to locate the genital area on ultrasound. In one study: at 12 weeks, when the genital area was successfully visualized, gender identification was correct 92% of the time. At 13 weeks it was correct 98% of the time. **In this study a very experienced physician, not a technician, did the studies. ...Read more

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Could doctors be wrong with ultrasound gender?

Yes: Ultrasound is what we call an operator dependent modality. That is, the skill of the people doing ; reading the scan determines the adequacy of the interpretation if a picture does not clearly show the gender, mistakes will be made. Sometimes a loop of cord will be confused with a scrotum. My rule was always, "if you're not sure of the gender, say nothing! " that's how I was always right. :-). ...Read more

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What's the chances of an ultrasound scan getting a due date wrong?

Often: We use several parameters such as last menstrual period, first detection of the baby's heart beat, and serial ultrasounds (more than one) to perform day/dates comparisons for due dates by measuring the baby's bi-parietal diameters + other things. A single ultrasound can be off by plus or minus 10 days to 2 weeks. ...Read more