What is evap?

Question

Can someone explain what evap means? I don’t really get it... and how he recognize it

Answer

The first responders post is spot on. I just want to add it stands for evaporation line. And it is typically faint and colorless, and usually visible after the recommended read time- aka after the urine has evaporated and left a line.

Answer

Its urine that pools on the antibody strip creating what appears to be a colorless line where the test line would normally appear. Occasionally it will have a bit of color after it dries from dye that didnt completely clear the test.

What is evap?

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