Dark positive line? What makes it darker?

Question

Had a really dark positive line. Is that good or bad?

Answer

The further along I got the darker the positive line.  When I took the FRER the positive was there but the test line was extremely faint.  They said it pulls the color based on how much it detects.

Answer

Your positive is so dark because it's pulling color from the control line. Congrats

Dark positive line? What makes it darker?

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