Questions about dim line on home test

I am going to sub using a donation from a friend. Call me paranoid but I tested it today (going to get the 'real' sample in a few days.)

He hasn't smoked in over a year. He does take perscription antiimflamatory meds daily, but is in good physical condition, proper height/weight, very active, etc.

I was expecting to see a nice dark line by the "T" but it was faded. It was very obviously there, but not near the same as the "C".

I know "a line is a line" - but, Will this be a problem?

BTW - this is the test strip I am using:

Drug Alcohol Test

LOL, a line is a line dude you are cool.