also you will only clear as fast as your liver can conjugate the drug. you cant excrete something that hasnt become water soluble yet (not 100% true but for the sake of argument). it really doesnt have a lot to do with your kidneys.
http://www.maps.org/research-archive/w3pb/2008/2008_Passie_23067_1.pdflsd is typically detectable for up to 4 days after ingestion by urinalysis. half life is 3.6 hours, and typically 5 half lives is enough to clear almost all of the drug from the system, so assuming your liver functions well and you express decent levels of the appropriate enzymes it will likely be gone within 30h, say 48 to be safe.
i wrote this up all on the assumption that a dab was a hit of acid. seems like its not, but here ya go
again, half life of thc is ~7 days, so 5 half lives is a safe bet for nearly 100% excretion. theoretically it would be about 35 days for full excretion but urine concentrations will be low well before that (predominant excretion is via the gut anyway). my pharm knowledge is limited, there would be better ways to estimate but i dont know enough
http://bjp.rcpsych.org/content/178/2/101#sec-5This post was edited by cloudkicker on May 7 2015 06:59pm