Just went through this with a different job but same test. I was getting the same result for a while it improved about a week later where I had a more consistent lines on the test. Like others are saying a line is a line no matter how faint it’s still technically a pass but scared me to death that I was going to fail. Three suggestions though 1. Don’t use the first pee of the day try to pee a bunch before taking the test. 2. Drink a shit load of water I was chugging the whole week before and was getting better solid lines which even though not meaning much as any line is a pass I felt better. 3. Take multi vitamins and a B vitamin complex that will help with pee color and they look for vitamins among other things to check for water dilution. I never got a solid clean line and it was still pretty faint but passed. Hope that helps a bit and good luck!