How accurate is the Heartbeat "test"?

Knottie1427415498

Just had my mid-pregnancy ultrasound yesterday, and even though we are Team Green, its still fun to take "guesses" at what we're having. I've read that if baby's heartbeat is less than 140 its likely to be a boy, and more than 140 means girl. Heartbeat was 149, and baby was moving A LOT during ultrasound, so much that the tech almost wasn't able to see everything they were looking for, but luckily baby turned the right way.
Just wondering how accurate the heartbeat "test" is?  How did it play out for you?

rvamom90

Our son's heartbeat has consistently been over 140 every appointment so it wasn't true for us. 

gadzooks_3

50/50.  

They actually did studies about this, no correlation between heart rate and sex, except possibly during labor.

ballofmeat

We are having a girl and her last heart beat was 140. I don't think there is any correlation. 

squishy0511

Our babies heart rate has been high, usually 160s which would mean girl. Nope,  It's a boy!! 

JournoGrl23

My baby's heart rate has been around 159 almost every time and it's a girl. I always assumed that was one of the old wives tales though.

kattyleigh

The heartrate correlates to what the baby is doing while you're listening to it: sleeping vs awake, so it has zero indication of sex. 

Stephanie7693

Our boy has been over 140 every time. Before 20 weeks he was in the 160s or upper 150s every appt

MamaKSquared

We're also team green, so I can't say if it was true for us. Our midwife did tell us that people would try to tell us it's a boy/girl based on the heart rate. She said don't listen to them, it's nothing more than an old wives tale.

jamiesc58

It turned out to be true for our first dd and first ds. Our second dd had a "boy" heartbeat the whole time and this baby boy has a "girl" heartbeat according to that old wive's tale.

Pepper6

I hadn't heard the limit to be that low, but DD's heartrate was consistently in the high 160s and this one so far has been in the mid-high 140s and we just found out it's a boy.  So, accurate for me, but I think it's more of a coincidence.

Neesey

All the nurses thought our son was a girl when I was in the hospital because of his heart rate. 

JLyn821

I've heard that if it's above 150 it's a girl and below a boy. If that's true, it was accurate for us. DS's heart rate was never higher than 147 my entire pregnancy. This baby girl is always in the 160s.

ShanRum3

I'm pregnant with boy number 3, and we have had heart rates over 150 almost every time for all 3! (sometimes even over 160) The nurse at my OB's office has sworn I was having girls, based on heart rate, but every time, it;s been a boy!

foxxytwt

This is the one old wives tales that's been true for us! My son was always in the 130s and my daughter is always in the 150s. I also heard 150 was the cutoff 

tinkerbell11210

I don't think there is any correlation. This pregnancy and the last one are drastically different including the heart beat and they are both girls! 

lalalorelai

It's right about half the time. Like a PP said, there have been studies looking at this and there's no relationship between heart rate and baby's sex, except right before birth. It's just an old wives tale. 

To add another personal experience, it wasn't true at all for us. My baby's HR was always on the very upper edge of the "normal" scale, never less than 154. We found out a week ago that he's a boy. 

bgrace44

We are having a little boy, and his HR has consistently been >150. My mom was certain he was a girl bc of this. Just an old wives tale