Hacker News new | past | comments | ask | show | jobs | submit login

Check out https://www.reddit.com/r/TFABLinePorn/

A subreddit where users post positive or probably positive pregnancy tests.

Pregnancy tests generally measure hCG concentration in urine, early in the pregnancy concentrations are low and the test line will be very faint if visible at all. It's only later on in the pregnancy when the line will become more visible.

Pregnancy also involves a lot of emotion, hope & fear, in combination it's not that surprising that a portion of people misread pregnancy tests.




Wow I did not expect that! Many of them are really hard to read actually!

A quick example of two positive tests side by side https://i.redd.it/llw9fmn6dxk51.jpg

Even worse, sometimes the reaction is so strong that there is a "dye stealer" effect, where the test line steals the ink from the control line. See for example here: https://i.redd.it/skdynwwi6ll51.jpg (Notice how the line is on the "wrong" side)

No wonder the misread rate is so high indeed...


Those aren't misreads, those are ambiguous tests. The computer would get false negatives on those.


Strictly speaking if the control line disappears that's an invalid test.

https://www.early-pregnancy-tests.com/inpregtesstr




Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact

Search: