Faint Lines in Test Area

[frostedflake420]

Dillution puts enough fluid in your system to shut down your kidneys from filtering your blood and producing urine, because it is more worried about the excess water.

Once the water is gone then the kidneys go back to work, and thats when you get dirty.

Also most home tests show a line for negative =D, and a blank for positive

[Burnt Toast]

Dillution puts enough fluid in your system to shut down your kidneys from filtering your blood and producing urine, because it is more worried about the excess water.

This is false. If the kidneys were to "shut down" or prevented from doing the job of filtering the bloodstream, that person would soon die - unless dialysis comes to the rescue.

Drinking a lot of water lowers the blood osmolality (the concentration of solutes in blood). The body needs to keep blood osmolality very tightly regulated, so the response to a fluid load is to excrete the excess water due to a shutdown of antidiuretic hormone, which diminshes the kidney's ability to reabsorb water in the kidney. However, GFR (the rate of which THC metabolites, impurities, and water are filtered from the bloodstream by the kidneys) is unaffected. The same amount of blood is filtered by the kidneys per minute, and the same amount of THC is filtered into the urine per minute, it's just that less of that filtered load (which includes a lot of water) is reabsorbed later in the kidney due to the temporary shutdown of antidiuretic hormone. This hormone normally helps the kidney reabsorb filtered water, so we don't all pee out all of our water and die, but when osmolality is at stake the body must get rid of the excess water.