Dilution Math

I had this idea, see if it sounds logical.
If I buy a home test with 50 ng cut off and pass it normally, no dilution, but what I really need is to pass a 20 ng test, then what I need is to pee 49/19 , (49 being the ng level I might be at now dived by 19 the level I want to be at), or 2.45 times more than I have been peeing normally.
They say a normal person pees around 8 times a day, lets use 10.

10x2.45 = 24.5

So peeing 24 times a day or once an hour should bring a person at 49 down to right at 20.

Normal creatinine excretion per day is 14 -26 (we'll say 18 for an average) mg per kilogram of weight so a 200 pound guy (90 kilo's) should excrete 90x18=1620 mg a day.

1620/24 (divided by 24 pees a day) = 67.5 mg per pee , they look for 20 ng per deciliter so 67.5/4 (divided by 4 deciliters of pee, that's 12 oz of pee I'm assuming) = 16.8. If they look for 20 that will be a little low, but you could probably beat that by eating a lot of red meat, fish and or supplements before the test.

Does this math, "add up"?

If so, I figure a person could estimate the ng level they think they may be at or test to see, and the formula depending on weight and see if dilution looks practical.
I also think if you are over 120 ng naturally then dilution probably won't work, without lots of creatine supplements.

Way too many variables for anything to be considered reliable or consistent in any way.

Solution: amazon.com Ã?Test: THC 20 ng/mL Single Panel Drug Test (1 pk) Most Sensitive Instant THC Test: Health & Personal Care

I do not think that would work, not reliably anyway. But if you want to do some testing, Halo9's solution would be a way to go. Get yourself some validation/adulteration strips as well. They are cheap and will tell you if the sample is valid regarding creatinine, S/G, PH etc. I have some called UrineCheck 7.