Can an evap show progression?

I took a frer yesterday and got what I thought was a vvfl, took it apart and saw what I thought was an evap. Then today I took another one, same thing, but the evap line is darker than yesterday? Can an evap show progression or is it a vfl?

Glow Resources

Let’s Glow

Glow is here for you on your path to pregnancy

Glow helps you navigate your fertility journey with smart tools, personalized insights, and guidance from medical experts who understand what matters most.

25+ million

Users

4.8 stars

200k+ app ratings

20+

Medical advisors