How do pregnancy tests work? - Tien Nguyen
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- čas přidán 3. 06. 2024
- 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: ed.ted.com/lessons/how-do-preg...
I feel bad for the HCG. They do not look happy
Foluke O. Hahahah
Foluke O. They fear for their lives
They look so stressed out hahaha
they scared me when i was young
Fifi O'Neil How? You can't see them
If more schools decide to teach sex ed they should totally use these videos
they (or my school) does teach sex-ed
-Chloe - mine doesn't do sex ed but they do puberty/period talks next year in the other school I will be going too will have a sex ed class as part of biology
-Chloe - my health teacher actually showed the class one of these
-Chloe - or if the schools that *did* teach sex ed wouldn't use fear-based abstinence-only tactics, they would show these videos.
*Michael * true
Egyptian child to mother, "Why does this bread taste funny?"
Omg....lmao....!!
😂😂😂
This comment ended me dkshdsjs HAHAHA
.....OH GOD NO
Omg🤣🤣🤣😂
The fact that the Egyptians realised that the urine was something to test, and the test they designed, for their time this is really impressive!
@@breewilson6376 It's more a question of should lol.
Ancient Egyptians were of White European DNA, not African. . . by the way.
@@ronlacker326 egypt is in europe now?
@@h...848 Ancient Egyptians were of European genetics. Can't read basic English?😂
@@ronlacker326 i see that i misread your point. still, where did you get that the Egyptians were white Europeans from?
If you wait 9 months and no baby comes out, you weren't pregnant
Haha
Lol I was born 5 months early
He should be underdeveloped very very
ok? hey headphones! I came here to hear the video!
ODDEYES then why comment at all? i don't care how old you are. it's 'this' not dis by the way
impressive how advanced Egyptians were.
apparently, they could have went to America before the British
PrinceChris93 i am egyptian lol
Look at my channel description
not treally; they were bad sea navigators
they only trust the Nile
PrinceChris93 i
PrinceChris93 Illuminati....
Man gets positive on a pregnancy test
“Honey...come here please.....”
Ashwin Verma what.
@Ashwin Verma that your pregnant
Or he has cancer
Me:reeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeseeeeeeeeeeeeee
Negative=not pregnant positive=pregnant
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.
Thank you!
Yeah as someone who does sandwich ELISA on the regular this was a little cringey to watch.
Whoa! You make these? Interesting.
I came to the comments to confirm if this was an ELISA. Thanks.
Can women visit dentists during their period/ during pregnancy? Watch to find out: czcams.com/video/U4WTrzdvPEU/video.html
so men can use a pregnancy test to see if they have testicular cancer?
Will Helterbrand By the time you get a positive that’ll be baddddd news
yes. if i knew my guy friends use tests i would say "YOURE PREGNANT WHO THE FATHER" rather than "you have cancer?" 🤣🤣🤣
Mhhmm btw live your pfp XD
go to the doctor: SMALL BRAIN
get a pregnancy test: BIG BRAIN
That xbox throwback
Wait... So Egyptian wait until next harvest to get the result. I'm pretty damn sure people can tell by their own eyes by then.
Lol ikr :))
wish i could like a comment in phone
+Xiguang Li She was exagerating. It takes maybe a week for seeds to sprout.
like
nope she's just fat
"Yay im pregnant" - guy who doesn't know he has testicular cancer
Him : czcams.com/users/shortsAKLDnM1m3rg?feature=share
Excuse me but *guy?*
@@itssTeal yes
@@itssTeal testicles? you think biological women have testicles?
Me who is 15 and had testicular cancer: **Relatable**
3:51 doctor: “You were so brave during your tests! Here, have a floating red orb for being such a brave girl!”
That's fuchsia 😒😒😒🙄🙄🙄🙄
My doctor didn't give me an orb :-(
😂
Well the only way for him to give you a red orb is to…yeah
Better yet, how the Fuk did Egypt think of peeing on some seeds??
rickiex Urin is a great fertilizer.
To add to that, Egypt as a civilization existed for an incredibly long time, the Pyramids were over 2000 years old by the time Alexander the Great invaded Egypt in 332 BC.
After 2000 years of people regularly pissing on seeds in a civilization with excellent written records, this kind of stuff will get noticed.
rickiex probably the same way that came up with the inject pee into frog test..
rickiex the old ones are smarter than you think
rickiex Because they are mor smarter than you
exactly!!!!
I really liked learning about the ancient Egyptians' pregnancy test! So cool!
Ancient egyptians were smart
What were people in my country doing back them? They were living in houses made out lf sticks and couldn't even talk
I feel you, mate xD
Northflower what the flipotuo fickodk
Northflower geography playes huge rule
That’s why civilization started in the Middle East... in the middle of the old world trading with everyone and having access to many seas help in starting a civilization
Northflower geography playes huge rule
That’s why civilization started in the Middle East... in the middle of the old world trading with everyone and having access to many seas help in starting a civilization
2:46 these animatioms r just so cute !!!!!!
I love how the test was called “Prego Presto”
"Please hurry" in Italian
I remembered Insaniquarium XD
@@ghiyatsrizky653 Presto 😂
Those egyptians were full of tricks! I woudn't be surprised if they had wheat cars or something hehehe
Maruk yu kann They had birth control, but used the source so much it went extinct.
JaySee5 you're talking about the heart shaped seed? The romans helped to extinct it too, right?
Maruk yu kann 70% reliability is pretty weak. Especially because a random result generator reliability would be 50%.
FuranDuron xD that's right! lol
Viktor6665 It might be weak, but the fact that it somehow worked is impressive, don't you think?
me:
*_i still have my V card but i'm scared to take a pregnancy test._*
jOhn lEnnOn FORREALL
jOhn lEnnOn
Can someone explain to meh wut a v card is. Google is no use.
@@rina5332 virginity
Sarina Z You’re clearly too young.
Harambe stay in heaven #dicksoutfirharambe
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.
I’m so sorry for your loss.
So sorry you went through that. I hope it doesn’t stop you from trying. ♥️
@@hailey740 im not native english speaker but i didnt get it, she doesn't look like she's sorry ,maybe i read it wrong but the last sentece...
@@ArmyofFallenOnesOfficial I think it did affect her and she was indeed very sad, but has processed the loss and now can talk about it more freely.
@@bintisf man ı have stıll the same feeling I hope u are right
Oh My God, the animations are sooo hilariously good, I laughed at the cuteness and the way the story is told. ITS THE BEST!!
0:30 Wow, dem Egyptians... why you so smart?
Bram06 I'm just wondering if it was random bullshit that happened to have some truth in it or if they experimented with different methods and found this one to be the most reliable. Hmm :p.
Bram06 We stopped being smart long, long ago.
Bram06 lmao
Bram06 were smart cuz were egyptions
Bram06 aliens
Is it weird I want to purchase the shower curtain at 0:50
Gabe Helmy would want to lol
my teacher has the exact same shawl
same lmao
lawl xD
Stephanie Stiller Weed is bad for you. It kills your neurons.
03:35
The most shocking day in a man's life
😂😂
In deeed
Yk that just means he has testicular cancer right?
@@Subtlxty Not really , It's true the HCG ensyme is higher on victism of testicualr cancer but erally all men have those ensymes in smaller levels.
So a sensitive enough test can show a false positive to all men.
It's similar to how a sensitive drug test can show positive after you ate a bagel with poppy seeds because it can sense the very low level of opium.
@@Phoenixillusion18 yes I know. I should've worded it better.
Omgggg noooooo🤣🤣🤣🤣🤣
I like how the HGC squirms as the Y bois hold him down while smiling
sorry but it's HCG
@@somebody8508 no one asked or cares
@@FATI_SZN i do
@@somebody8508 no one but JadensRoblox asked or cares
@@FATI_SZN I did .
Fun fact: the urine test you take at the doctor's office is no more specific than the one you take at home. The one that is more specific is the blood test (that's the one that can tell exactly how pregnant you are)
There are two types of blood tests: one that detects if there is HCG in the bloodstream, and one that detects how much. The latter can tell you how far along you are.
@@kamcorder3585 I specified the test I was referring to in my comment :)
This is the first time I have seen a TED - Ed video made by a Vietnamese educator. Now I feel so proud because I'm Vietnamese too. Go, Tien Nguyen, go!
I’ve seen Tien Nguyen make videos a couple of times and I am Vietnamese as well!
Lol i thought he's just a translator for the title. If he did make this video, congratz to him then.
this would be such a good video to watch while waiting for results
I'm 17 years old, no girlfriend, live with my parents.
Why the CZcams recommend this for me ?
Why not?
You are lucky be careful who you sleeping with. If wrong or older women it will get you 4 rest of your life 20year alimony
Becoz it can detect cancer.. you can do it too ( i am not joking search it up )
Dr.DeMoon I’m 21 years old and am desperate for a girlfriend
What did youtube mean by this
Cringed @ 3:46 when the obgyn stuck a bloody needle in her coat pocket.
Nice how it can be used as “bloody” as an interjection on “bloody” as a literal needle with blood.
The doctor also drew the blood from the wrong part of the arm.
Me: " Yeah, I've performed a controlled experiment 😎 "
Teacher: " Oh, what was it? "
Me: " aha.. pregnancy test "
😂
😂😂😂😂😂😂😂
Ur graphics and the mini stories told....which are basically just the functions of hormones, are amazing....it can literally capture attention people till the very end😂😂 Great job
TED ED is my ever favourite channel on CZcams. I learn a lot of things which I didn't learn from school.
Well, ectopic pregnancies aren't false positives. They're pregnancies too.
They just got lost
That's sad
Yeah, they're a pregnancy in the wrong place.
Deadly ones
Heartbreaking
im a male but I'm still watching this
Nothing wrong with that
I'm a female and its okay for men to watch it, so they can learn lol
Im...too is a men lol
Ruben Aguilar same
Same here but only because I need to understand this for my GCSEs
Teenage pregnancy - test postitive
Teenager - “Well, at least I witnessed the process of the scientific method”
Well made lesson TED group, as always!
3:34 Why schould a men use a pregnancy test ??
Cero Veth so he can see if he has cancer because pregnancy test can detect it
Vasilija Vujanovic i think only prostate cancer can be detected by it because the hormones are very similar to the hormones of a women that is pregnant
Cero Veth Imagination
Cero Veth probably bored, or doing it as a joke. not so funny once he googled why it would happen later out of curiosity...
+Vasilija Vujanovic No, testicular cancer can be picked up too. But its not a 100% reliable method.
70% accuracy!! I'm impressed!!
I do know about all the hormones mentioned and their functions and are quite accurate but never the functioning of kits.
Thanks TED-Ed ♥️♥️♥️
It is so easy to understand more why the second redline apprears, thanks lot
0:57 "Honey pass me the gun"
Pedozzi haha omg
Pedozzi 😂🤣🤣 LMAOO
3:37 LOL the animation and the narration
why did i watched this whole thing while im being 13 years old
omg i never got any likes on my youtube comment 😭 thank u all for the advice though
wanna test if it works?:)
knowledge is powerful
you might need to do it someday, you never know ¯\_(ツ)_/¯
That's a great thing though, you learn alot about human bodies as early as 13! Honestly as your parent I would be proud of you watching informative videos like this. You may not need it today, but it's great information to know, especially when you would need it sometime in the future.
@@Descension. that's creepy, you're talking to a 13 year old. What are you gonna test if it works???
It’s so nice to understand the mechanism underlying test now as a biochem student
"Mom I'm pregnant."
Mom: I'm so proud of you! Your father always wanted a 2nd child.
*Sweet Home Alabama*
Haven't hit show less this fast before.
Door-to-Door Hentai Salesman how do I invest in your business.
@@Ghostbat007 😭🖐
I thought that at the beginning of the video she said "The earliest known pregnancy"
and im like "wait HOW DID WE REPRODUCE BEFORE- oh its pregnancy TEST, ah ok I'm dumb"
Brianna B haha 😂
0:20 “woohoo your pregnant!” *immediately gets a 9 month belly*
this video should get some kind of Oscar... so informative, funny, cute, even historic.. thank you
I just watched animated pee... and I learned something.
Take that Science
.... wait a second.
Thanks for this. This is so informative. I never knew about this. It's really amazing. And a useful video. People must have found it beneficial. Keep sharing such videos.
Can we please take a moment to appreciate this sundial watch at 4:14
I really love your work, thanks for sharing
How do pregnancy tests work when one is on the pill?
Mystik Basilisk I've been told the pill works by producing hormones that tricks the body into thinking it's already pregnant, thus preventing it from releasing an egg to get fertilised.
This is a good question...
It is possible to get pregnant even on the pill, it is just far less likely. Hmm.
Northflower OwO Mystik Basilisk if you take antibiotics while on the pill/implant, it stops it from working. So yes, you can.
+Sara Wolverton The hormone that prevents ovulation isn't the same hormone that creates a positive pregnancy test. When a woman is pregnant, the elevated levels of estrogen in the blood prevent her from ovulation during her pregnancy. In the pill, the synthetic estrogen does the same exact thing (thus the idea of "tricking" your body into thinking it's pregnant and stopping ovulation). but the pill doesn't provide you with HcG, which is the actual hormone that makes a pregnancy test positive. HcG only comes about from the placenta after implantation. So you wouldn't produce a positive pregnancy test just from being on the pill.
Lexi K We need more answers like this.People like you make Internet very educational
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
Now I understand how it works. Thanks to the genius animation
Loved the way you explained
A very nice and informative video. However the use of antibody-enzyme fusion proteins as described in the video is not the case with the vast majority of the home pregnancy tests. Most of the assays rely on gold- or latex nanoparticles to generate the visually detectable signals.
I actually never wondered about this till it popped up on my recommendations list lol
1:00 I love this animation
To all the men who don't know why CZcams 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.
Thanks for the heads up! Went and done runned a test, my balls are not spawning more balls so that's good I guess
👍👍
this way good info I learned a thing or 2about something I know about but didn't know about.
This video is excellent! It's exactly what the lecturers teach in med school, and public should also know about this
3:20
"Hey kid, wanna pregnancy test"
These facts are quite interesting ❤️
I hated the wait for the results on both my children. But loved when my wife gave me that look when we got the results.
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
Why are pregnancy tests so expensive in America. Like its just a women trying to see if she got pregnant after a accidental one night stand or wants a child
@@amritagupta1987 agreed. Pregnancy tests should be cheap atleast
Makes sense, thanks for the info!
*Wow i’ve learnt a lot from this video! Thanks!* 😄
It's one in the morning and I have a test tomorrow. Yep I should watch this
2:24 I didn't know that period could happen during the pregnancy test stick!
crying noodles lol
1:55 that animation of travelling with Sunglasses on Anzyme😂😂
Ted-Ed answer most of the questions I didn't know I had
I love the cartoons. An the info too!
Winnie Loves Life ikrr
I didn't understand well, so I'm watching again
How bad...
@@someonerandom298 shut up
Is it funny
I did not get joke hete!
It's an informative video. I wonder how long does the test kit result last...
Love this animation 👌
When I looked at the pineapples I was like PPAP
Pen Pineapple Apple Pen!
How do people come up with such peculiar ways to know things?
I love the illustration in the video
I tested 2 days before MP was due and got very strong positives with a Wal-Mart blue dye test & dollar brand test & tested again next day with FRER on normal and digital and got more positives.
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 🌺
libraries* because most people burnt down universities full of books and scripts about the human sciences
practical? they had a 30% chance to fail
I once had to take a pregnancy test because of my operation I was happening and it came back negative and I wondered how it could work (the pregnancy test)
Which software do you use sir ?
..... Excellent editing....
Man This is why I like Ted. For one I learn the thing I wanted to. secondly I learnt something new about the Egyptian method. and last but not least in the extra resources in the description they also include the source for the research paper that proved the Egyptian method
Speaking of pregnancy, my aunt is giving birth in 10 days (December 26 after Christmas the best gift our family could have lol)
I keep telling myself “one more video” but then I click on another.
This really did teach me something!
Creativity gud concept ...thanq madam
why im i watching this xD
Am i*
Prego Presto lol
I love TED-Ed they make gr8 videos
Thank you for your amazing videos
My favorite pregnancy test to use is “wait like 20wks and see if I get a baby bump”
it's not pronounced "a-say", it's pronounced "assay".
Lol nobody cares grammer boy
My man didnt even saw the uploading date of this video XD
@@justarandompersonwithaspec5104 that's not a grammar mistake💀
@@justarandompersonwithaspec5104 bet your special technique is making people laugh hahahaha
This is the cutest illustration ever
Thank you for this vid it's entertaining and you can learn :))))
I can't wait for the day that my partner and I finally use a pregnancy test and it comes out positive c:
Has the day come yet?
How about now?
@@t1a how about now
how about now?
now???
Very informative video🥺❤
I take a home covid test one time and now these videos are all over my recommended.
Welcome to another episode of *Where Quarantine has brought me*
😂😂😂