5 panel or 10 panel just means how many different drugs they test for.Dilluting isn't a factor except if you over dillute you'll fail for any of the tests.
Yes they do test for specific gravity.That along creatine levels,specific gravity and color is how they test for dillution.

I still think you're probably in good shape as you haven't smoked much. Just follow the dillution sticky the morning of the test and you'll probably be fine. There is no way for anyone to tell you that you are going to pass 100%.
If you are really concerned the best thing you could do is pickup some synthetic urine.
killerweed420 Reviewed by killerweed420 on . Employment Testing: + other ?'s Hello everyone! First off let me tell you about myself. I am 24 yrs old, Male 230 lbs, The last time I smoked was 32 days ago (1/2 Gravity hit) and before that was 2 months. I have a few questions for you knowledgeable people here. 1) I bought the First Check home drug test kit for marijuana. The first time I bought it the negative line for THC was extremely faded. Does that mean that their is still marijuana in my system? It says in the book that a faded line means a negative but Rating: 5