I figured I would post my experience here for all...

Background: Former heavy, heavy smoker for 15 years (approx. 1/8 a day, mainly through bong) - quit that pattern in Oct 2007 for a job with random testing for a year - didn't smoke AT ALL until March 2009 - from March until July 8 regular use of about 2 grams a day again mainly through the bong - I'm a large mammal, about 5'11" 335 lbs - a lot of muscle with years of fast food & horrible diet habits packed on, so it wouldn't be all that easy to get THC out of the system

So here goes.....

Found out last Wednesday that I will be taking urine test today (Monday). Immediately went t GNC and bought some cleansing products (Garden & Greens brand AcaiBlast Chews as well as Garden & Greens 48 Hour Liquid Detox) as well as a bottle of QCarbo Clear 20 with the five vitamin pills. Since Wednesday, diet was mainly rice, chicken, eggs, pasta, ahi tuna, peanuts. Mainly drank water (with the liquid cleanse and without), juices (OJ & Cran) and a few Powerade drinks. I cut out just about all soda (drank about half a 20oz. bottle a day) and only had three beers on Friday, no other alcohol. Followed the directions (in between meals) for the liquid cleanse while eating a few of the Acai chews each day. Drank a shitload of water each day as I needed to get my body to urinate with regularity. I work outdoors most days and since I sweat a lot at work I was only urinating about 2 times a day (wake up/prior to bed). Took a home test (Pharmatech at home test THC only - purchased at RiteAid) on Friday and failed as expected. Continued the cleanse routine with a lot water. Woke up around noon on Sunday and figured I would try the QCarbo on a home test first. Made sure I urinated so it wouldn't be the first one of the day and followed the QCarbo instructions - drank 20oz. of water, wait 15 min, drink QCarbo with the pills, wait 20 min, drink another 20oz of water. Urinated twice while waiting for the hour to pass for the QCarbo to kick in. About an hour and twenty minutes after taking QCarbo, I took another home test (First Check Family brand THC only - purchased at RiteAid). PASSED the home test. Thought I would be ok...

Drank water & continued cleanse products throughout Sunday. Urinated frequently from Sunday through the middle of the night, just about hourly. Woke up this morning at 5:30. Drank 20oz. of water at 5:45. Drank QCarbo with pills at 6. Drank another 20oz. of water at 6:20. Left for work/test. I knew I would have to sit through a safety presentation before test. Took urine test at 7:50 and FAILED. Test was a 12 drug scan I believe, but I'm positive the brand was iCup. Lady wouldn't tell me why I failed, but marijuana is the only thing it could be.

So draw your own conclusions...