Whats Inside a Digital Pregnancy Test - Dismantling Clearblue Easy - Salvage

How a digital pregnancy test works & what parts are inside; take a look as we completely take apart a digital pregnancy test (Clearblue Easy Digital Pregnancy Test). You may be surprised to see what’s inside. See how to salvage some free parts including a button cell battery & mini LEDs. Plus I will explain the way it works in both simple and not so simple words (yes, some potentially good Scrabble word score values to be found here). Find out how digital and manual tests differ as well as similarities.

It’s fun to take things apart, learn how they work and seek out ways to come up with new uses for the everyday stuff that might just get thrown away. In this video I have an expired Clearblue Easy Digital Pregnancy test that was not used which makes it a perfect, clean item to dissect in the hopes of finding cool parts to reuse or repurpose (like the 3v CR2016 button cell battery that had a full charge).

Basic overview of the technical stuff: most store bought pregnancy tests work from a similar method and set of test agents. A specially treated stick (containing various protein antibodies) is exposed to urine to test for the hormone Human chorionic gonadotrophin (hCG). Presence of hCG means a positive pregnancy test. In the digital test the urine is introduced to the absorbent material which uses capillary action to draw the fluid through the test strip. Up to this point the test works just like the non-digital tests (i.e. standard immunoassay test strips) and inside the digital version there are similar test result lines that you find in the other tests. [FYI: the “immunoassay strip” is layered with a monoclonal antibody (MAb) that reacts to the hCG in the urine.] A key difference comes down to how the result is read. Instead of you comparing the number of lines in the result window to the instructions for an answer the digital device does that part for you (essentially). When fluid hits the appropriate section of the device it completes a circuit which activates the microprocessor. There are very small, red LEDs next to the area where the result lines appear. Next to the LEDs are small chromatographic devices which measure the amount of light that is reflected from the test result area. The test chip analyzes the light reflection results and then displays a test answer on the LCD screen; “pregnant” or “not pregnant.” The fancy term for this form of a test is Sandwich Immunochromatographic Assay.

[Soopa_Coopa_S]

Lol people on tiktok are saying the moisture tab is plan B 😂😂

[istifina]

hey great video but i have questions, so basically the digital pregnancy test is different in the way they "telling" wether a person is pregnant or not right? and by that they're using an optical sensor? the other pieces of the test work pretty similar with the traditional one? sorry if this sounds messed up, my native language isn't english and i'm currently studying biosensors this semester so i hope you could help me😅😅🙏🏻

[drew]

Thanks for the video! Short and to the point without. Looks like I'm getting a few LEDs, a button cell and the knowledge my girlfriend is only nervous and bloated 🙂

[faaewwewwasawft.heatherm]

Ok I have a question is there always 2 lines on the inside? I took one today said not pregnant but inside 2 very obvious lines?

[EllaCruzfansite]

did you ever use the pieces... i would love to know if there is a way to reset these tests that would be amazing

[tamarataylor]

I took an equate figital test today nd it said not pregnant but when I took it apart it had 2 lines nd 1 was really faint. Does it mean I'm pregnant or not? I've taken a bunch of other tests but they weren't faint

[adamgarceau]

Hey, I'm trying to hack the microcontroller for other projects... Have you done something like that? What did you do with it?

[Lee-qjhk]

Nice video :D - I'd be interested in hacking this to get a quantitative measure of the hCG level implied by the colour-change on the strip.

[gurinedodge]

Just to be very clear about the actual test strip within this digital test. my question : is it just like any other non digital pregnancy test ? As in 1 line "not pregnant" or 2 lines "pregnant"?.. Basically if you ran the test with non pregnant urine then popped the digi test open would the test strip only show 1 line ? If you test with positive pregnant urine popped open the test would there be 2 lines? I am really curious..please reply

[microclone]

It is a pity that such engineering and waste are required so users don't have to look at the lines and evaluate for themselves. I understand that the lines are not always so clear but you can see by some of the other videos that a magnifier or cell phone blow up of non-digital tests is just as reliable, or better.

[aleahrosser]

Absorb tablet😂I think it’s a plan b pill