Gender Determination in Southern California via Ultrasound-based 2D Imaging

Picture fo two babies

How accurate is ultrasound-based gender determination?

Our gender determination is incredibly accurate – over the course of about two decades, we have an accuracy rate of 99.99%. That means, on average, 1 out of 1000 customers has the negative experience of having us incorrectly determine their unborn baby’s gender (or genders if they are having twins or triplets). This is very low, which means that you can trust our ultrasound-based gender determination outcomes. 

Put another way, if we say it’s a boy, it’s a boy in 999 out of 1000 times. That is a very accurate rate for an elective ultrasound session to determine your unborn baby’s gender, and it means you can be confident that your gender check session will be accurate. Additionally, this rate is from about 14 weeks of pregnancy, which means we’re able to tell you very early whether you’re having a boy or a girl. 

How soon can I get an ultrasound-based gender check?

We typically do these types of sessions from about 13 weeks of pregnancy. If you can wait a week or two past that, however, it’s better – at 14 weeks and 15 weeks of pregnancy, we’re typically more confident and there will be a small chance that we’ll invite you back for a double-check/re-confirm session (no charge).

Are you able determine genders if I'm having twins or triplets?

Yes. Our sonographer is very experienced, with two decades of 2D/3D/4D ultrasound experience on pregnant women from both the US and around the globe. This experience allows us to be very confident in our gender determination predictions/conclusions, so we’re definitely able to do gender check session on twins and triplets.

However, with twins or triplets, we may ask you to come a bit later (around 14 weeks to 15 weeks of pregnancy), so that we may be more confident in our conclusions. When you call to schedule your gender determination session, simply let us know that you’re having twins or triplets. If you don’t know (eg. we end up telling you you’re having twins or triplets during an ultrasound session at our office), then that’s perfectly fine as well – we’ll either be able to tell you your unborn babies’ genders, or we’ll have you come back for a free double-check/re-confirm session. 

I'm planning a gender reveal party. Are you able to do secret gender checks?

Yes – we do this all the time. Check out our secret gender check envelope below. It has the following important characteristics to make sure you don’t find out if it’s a boy or a girl until you’re supposed to:


  1. Thick non-see-through (opaque) parchment envelope – This is to make sure you don’t peak and to make sure anyone else who isn’t supposed to open the envelope can’t peak also. The thick parchment keeps the important information inside secure until it’s time to make the gender reveal prep. 
  2. Sealed envelope – The envelope is double sealed to make sure no one opens it, and to make the envelope a bit more tamper-evident. 
  3. Top secret ultrasound session – The ultrasound tech won’t turn not he main screens, so you won’t be able to see the actual ultrasound. You’re probably unlikely to tell, but if you have a very keen eye, you may accidentally see the gender and ruin your secret gender reveal surprise. We’ll do our best to prevent that. 
secret gender determination sealed envelop
secret gender check envelope

How long does a gender check ultrasound session take?

Typically, a gender check session is very fast – it’s a 2D ultrasound and as soon as the sonographer is able to see the gender (visual confirmation), the session is effectively over. There’s almost no prep before the session, so a gender determination session can take as little as 2 min. However, it can take quite a bit longer, especially if there are factors that make it more difficult to see/determine.