How do pregnancy tests work? – Tien Nguyen
Dig into the science of how modern over-the-counter pregnancy tests detect pregnancy with such a high rate of accuracy.
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Over-the-counter pregnancy tests give potentially life-changing results with a pretty high rate of accuracy. But how do they work? Tien Nguyen explains how each test performs a scientifically rigorous, multi-stage experiment that goes from start to finish in the time that it’ll take you to watch this video.
Lesson by Tien Nguyen, animation by Andrew Foerster.
View full lesson:
If more schools decide to teach sex ed they should totally use these videos
pls no
@Pxrplegxal axthetic I don’t really know but I had it in 7th grade at the end of the year in science. Luckily it was in hybrid learning so it wasn’t to scary. My school doesn’t have honors science but my friends school in L.A does, and I don’t know if honors science learns it faster than normal people.
@Roxy Rules same
@Olivia Helman lucky
Kinda suffering here
As a person who designs these tests, you explain it well for a layman. However, there are errors in your description. The secondary antibody doesn’t attach a dye. Usually, the colour is produced by a colloidal gold particle (which is pink to red in colour), already attached to the second antibody. When the first zone is crossed, the urine interacts with the particle, but the particle is also moistened and begins to move WITH the urine sample and flow into the other zones where it is captured. You can confirm this by taking apart an unused pregnancy test, and a used one. You will see the “dye” (the gold particle) no longer is present in the first zone on the conjugate pad.
“Yay im pregnant” – guy who doesn’t know he has testicular cancer
@Alexis Camacho damn another thing I did not know about thank you
@Eesha Thakoor It’s all good I am cancer free and living my life perfectly normal now.
@Metal Sorry bro
I just learned that like a month ago
@Methane Lotus some women are born with testicals where there overlies are
Man gets positive on a pregnancy test
“Honey…come here please…..”
Lol
Thats cancer
fun fact: positive pregnancy tests on men can actually be a sign for prostate cancer
if it is positive for a man it could mean testicular cancer
That means he has cancer ?
If you wait 9 months and no baby comes out, you weren’t pregnant
@Cheetahjammerplays AJ You’d be dead if you were born that early, most of your vital organs haven’t developed at *4 MONTHS* !!!
Its possible you could be pregnant to 10 or 11 months some how
@Cheetahjammerplays AJ short
God his username makes this so much better
@Cheetahjammerplays AJ well, you weren’t born then
These are one of the things in which I was always curious about but never found time to actually search for the answer. It is really impressive how advanced ancient Egyptian technology were.
Those tests can be insanely sensitive. I had such a low reading the doctors were astonished I knew I was pregnant 3 weeks in. My cycle was abnormal so I checked. The good news was short lived. I had lost the baby one week after finding out. It is also called a chemical pregnancy that early on (I’m fine now). Still. Dang. Red dye based pregnancy tests work best, btw.
Egyptian child to mother, “Why does this bread taste funny?”
I don’t get it
“Hush child, its..a long wild story with lots of rides and twists..detailed.”
Egyptian mom: :/
LMAO
Jeez boi, that’s much
Well, ectopic pregnancies aren’t false positives. They’re pregnancies too.
@Anonymous Potato? i’m pretty sure it’s certain death for the baby though. horrible thing to go through.
@Ivy the Alien cat ectopic pregnancies are when the fetus is in the wrong place which can become very dangerous for the mother and child
Someone explain?
Heartbreaking
Deadly ones
I really liked learning about the ancient Egyptians’ pregnancy test! So cool!
Lol I got the Amazon prime Egyptian ad
@King Whitney oh cr#p
@Northflowo woah
@Mallory Fallon not at all
How about that a guy can get a positive test result?
I have noticed that inventions from before were practical, easy to find and zero waste eco friendly materials. Just awesome. ? Hoping they will revive and teach us the ancient secrets . If only the great library weren’t burned down, we would have discover more ?
practical? they had a 30% chance to fail
libraries* because most people burnt down universities full of books and scripts about the human sciences
I had a friend once who had a pregnancy scare in like freshman year. She was broke but also needed to take it before her parents found out. I gave her 20$, I hope she’s doin well. She was really nice
I feel bad for the HCG. They do not look happy
Yup
lol
They look like criminals
HCG is wanted by pregnancy test
? Ya
Well made lesson TED group, as always!
I do know about all the hormones mentioned and their functions and are quite accurate but never the functioning of kits.
Thanks TED-Ed ♥️♥️♥️
To all the men who don’t know why YouTube recommended this video to us. I want to say that it’s warning if we’ve got testicular cancer or not. So please watch it all and use pregnancy test to check if you’re positive or not.
TED ED is my ever favourite channel on YouTube. I learn a lot of things which I didn’t learn from school.
me:
*_i still have my V card but i’m scared to take a pregnancy test._*
I still have mine too, but I am too afraid to take the p testand also I have pcos
I’ll take that v card off your hands
@TeaCub what did they say?
@Aesthetic_ Xval didn’t you hear about the 5 year old that got pregnant
Pennywise The Clown ikr I want to so bad
I saw that exact test in a history video but I thought it was something very faulty and couldn’t prove pregnancy but after watching this video, I was stunned
Oh My God, the animations are sooo hilariously good, I laughed at the cuteness and the way the story is told. ITS THE BEST!!