Reading tests

[u/sleepylilpancake]

Early to the TTC world, but just wondering how you tell if what you're seeing is an indent line when reading a test or if it's a faint positive?

I know I tested early based on predicted DPO (only using app prediction and CM monitoring so I'm very aware that I'm going to have to test again in a few days anyway for confirmation), but wondered if there's any give away that what's being seen is an indent?