FakeBoobsRule,

My understanding is that while increased water consumption doesn't alter glomerular filtration rate, it does affect biliary excretion - although I can't defend that mechanistically or with any study that compares high water load serum levels with low water load levels.

Probably about 80 percent of THC is excreted in stool, so, if true, increasing that pathway would be beneficial.

And drinking water, while not changing GFR, does dilute urine. Double the milliliters and you effectively half the measured nanograms. I would stick with the water drinking.