Evap or Vvvvfl

Nicole • 🤱🏻👼🏽👼🏽 👼🏽 We are hoping for a triple rainbow baby.

Quick question for you ladies. How can you tell if what you’re seeing is a vvvvfl or an evap? Is it simply a matter of viewing the test within the 10 minute timeframe? Or is there something else to it?