Anyone have any knowledge of "First Check" drug tests?

Parent bought one for me on March 9, the night I got busted by the cops (fuckem)

Been drinking lots of fluids, lost 10-15 lbs since then, and kept it off, with rigorous exercise, etc. I used to be a CHRONIC smoker, like 6+ times a day minimum, I'm 5'8 165 and I still have about an oz of green to smoke..

This past friday and saturday, I smoked a few joints with friends, and I believe I will be tested between March 30 - April 6. If I smoke today or tomorrow, with additional exercise and plenty of fluids, you think I'll be able to pass this home test?

It's a 4-panel drug test for pot, opiates, cocaine, and meth (lol cause the others leave system really fast, and I've had it over 2 weeks now, the x has left me by now).

Never heard of it, looks sortof risky though, not sure how well it will detect and how well I will be able to fool it if I smoke tomorrow. I know I can prolong the test, because I only have to take it in order for me to drive my car again around town at nights.

What's your opinion on the situation? Thanks for any replies!

Looked up the instructions and information about the test online.

It is highly unlikely that my parents will send the results into a lab for further testing, and the instruction book said that bleach and all that diluting shit will not be detected by the test, that i could actually do all of that and still come up negative on the test, considering he never sends it in to a lab.

Think I'm good if the test picks up on 50ng minimum cannaboids in the sample? Thanks again!