False negatives on home tests?

I have an interview tomorrow with a company that I found out prescreens so I bought a home test kit today to help ease my mind in case they offer me the job. It came up negative, which really surprised me because I've been enjoying MJ cookies for the better part of this month and the last one I ate was about 10 days ago. I used a Quickscreen which says it's the "most sensitive test on the market, 99.9% accurate and as reliable as tests used by doctors and laboratories," which I somehow suspect is just some marketing embellishment to make me feel better about the fact that I just spent $19 on a single-use kit. Normally I smoke or have some MJ edibles 2-4 times a week, so my cannabis intake isn't excessive but I'm chubby and have a slow metabolism so I thought for sure it would come up positive after only 10 days of abstinence. What do you think, am I just being a worry wort or is a false negative a reasonable possibility? Will I be screwed if I take a real lab test in a few days?

 

Ideally you should test the first pee of the day for your home test, but definitely not for the real job test. There will be more metabolites of THC in that first morning pee and could give you a better idea of how you may do.

I don't know a lot about the home tests. Does it say what the testing sensitivity or cutoff level is on the test literature?
Drug screens are a two part process.
First is the initial test and the cutoff level is 50 nanograms per milliliter. If that comes back as a positive, metabolite level greater than 50, then they do a second confirmatory test with a cutoff of 15 ng/ml

If you can get your level below that initial 50 ng/ml, then you should be good to go.
Take multi-vitamins and drink plenty of fluids starting now until your test and don't give them the first pee of the day.
Also eat a high fiber diet and maybe even some mild laxatives if your really concerned. The majority of THC metabolites are excreted through your poop, not your pee. So if you take a lot of craps that will also help to lower the levels.

Here is more info about testing and legal info regarding it;
http://jobsearchtech.about.com/od/laborlaws/l/aa090301_4.htm

 

those detox drinks you can buy in headshops work wonders if you're really worried about it. I dont know anyone who has ever failed a drug test using those. I dont really know if theyre legal in every state though.

green tea works wonders for flushing your body of toxins.

 

ive been smoking a long time, the only way i can beat a piss test is the syntho urine. for me , the home test was worthless.

i take that back,, 1 time i used stuff i got from norml,, turns the thc into sugar , i think. ive tried all the flushes,, none have worked,, or they left elevated levels of somehing or other that made for retest

good luck

 

Thanks PB Yeah, the test literature goes by 50 ng/ml. A negative yields 2 pink lines, one in the Control box and one in the Test box, and it said it doesn't matter how faint the line in the Test area is, if it's visible then it's negative. The line is just barely visible, but it's definitely there so I'm assuming that means I came in just under or at 50. I did not know that more metabolites are expelled in #2, but I am very... *ahem* regular (3-5 times a day, sorry ), due in part to a vegan diet that is high in fiber so perhaps I have that to thank. I also drink about 90oz of water a day, take vitamin C and b12 supplements daily. I can probably bump up the water to ~110oz and take extra C and b12, and add a multi until the test for extra insurance.

Meliai, I was thinking of getting a detox drink just in case, I think certain ones work better than others because I've definitely seen people fail tests but most likely they didn't follow the instructions properly. I've also read about people stocking up on the green tea ahead of time... It can't hurt, so I'll probably pick some of that up too.

Thanks guys, I feel a little better now.

 

Yeah, that was my main concern as far as getting a "detox" drink. They are sold as a detox but most of them just mask the THC one way or another and end up triggering something else in the results. Nothing can actually detox your body in an hour. But, I know people who have used them successfully, provided the company is cheap and uses a lower grade insta-test. I doubt this company is going to be any more serious than a urine test, but I don't know which lab they would send me to and how sensitive the test quality would be.

 

ive learned to spend the 50 and be sure.


now im wondering if a medical card would get me past 1,, the laws are still so vague

 

Yeah, I'm sure I'll end up getting one anyway at least so I can say I did everything I possibly could to pass the test - aside from abstaining sooner, but I ate the last MJ cookie days before I filled out the app and I didn't expect them to select me for an interview in the first place So if I come up positive, then oh well I guess it wasn't meant to be. I'm assuming I'll have a few days between the interview and the test, provided they offer me the job. They usually don't offer you a job on the spot and send you right to the lab.

Positive thoughts and vibes though, I really need a job and this is one that will actually help me get my foot in the door to the career I want, not just a shitty mundane bill payer that I resent and dread waking up to every day.

 

Just make sure the day of your test you do/don't do these things
1 don't give them the first morning pee
2 take some vitamins that morning. it helps color your urine so it does not appear too dilute. (sounds like you already got that covered)
3 don't go wild with the fluids or any diuretics the day of the test (most detox drinks are simply diuretics) otherwise you run the risk of giving a sample that is too dilute and that often will cause a failed test but not a positive. They test for certain protiens or something to determine if it's to diluted or tampered with. Some employers may let you retest another day, some don't as they assume you were trying to alter the results.

Good luck and I hope you get the job

 

Thanks! I've actually been granted a couple extra days. Showed up today and asked for the interviewer and they were like, "There's no one here by that name I don't know who contacted you but I selected your application and was about to call you tomorrow to set something up. Come back Thursday."

I'm fairly confident I'll piss clean even if (hypothetically) they asked me to do it as early as Friday. So that pressure's off, now I can concentrate on not bombing the interview by saying something stupid or flaking out

 

Good luck sb on the interview!

 

Thanks! I'm going for a dog/cat "hotel" caregiver. It's only been... 25 years since I've wanted to work with animals. I want to be a vet tech and hopefully veterinarian eventually but don't have the money for school and can't afford to acquire anymore debt from loans at this point, but at least this is a great opportunity to get my foot in the door. I'm really excited about this, keep your fingers crossed for me!

 

This has happened to me twice ha. Exept they were Wal*Mart Marijuana drug test kits and For both I smoke 3 days prior to doing them and they still came out negative either I have a super fast metabolism or I say those tests need to be checked before they come out on the market..

 

That was one of my worries and it could still be legit, just 'cause the box says it's "as reliable as doctor and lab tests" doesn't mean shit, but I guess it is possible if you do have a fast metabolism and don't smoke consistently in the weeks leading up to the 3 day break before the test.

Up until the start of the summer I smoked multiple times a day for the past couple years, but I started cutting down to keep my tolerance and my wallet in check. At the end of June I got into a car accident (my "fault" but not really, it was road conditions but I won't get into it here) and they piss tested me at the hospital to make sure I wasn't high or drunk. I smoked probably 4-5 times in the 2 weeks leading up to the accident and last smoked about 3 days before it. I'm assuming the test came out clean because the issue was never brought up, I definitely would have gotten slammed if I pissed dirty, wouldn't I? Like I said up there I'm chubby and have a slow metabolism so if I can piss clean, it's very likely that someone slimmer with a faster metabolism would, provided they aren't going through like an eighth per day every day.

 

Arghhh, I was offered the job today but I don't think I'm going to pass. Maybe I'm just letting the online THC calculator bug me out but I tried to emulate my use/abstinence as realistically as possible from memory (stoner memory, go figure) and if it's at all accurate I'm still going to be a little over 50ng/ml by tomorrow. I felt pretty confident over the week until I came online today and read reviews on how sucky the home test I used actually is, and the useless fact that I might have a chance with a detox drink, but 1 - the closest headshop that might have them is 40 minutes away and doesn't open til 12, I have to take the test before 1:30pm and, 2 - Even if I could find one at GNC down the road I'm flat broke anyway, I literally cannot afford a $30+ drink.

I might have a chance if I seriously dilute my pee but color it with vitamin C and B12 (which I've been doing) but then levels of other materials like creatine will be low and the sample will be suspect. Will the fact that I don't eat meat, fish, or dairy be an excuse for the low creatine levels or do they not care? Also, I'm pre-diabetic and take insulin regulating medication that makes me always thirsty so my pee is normally quite pale and diluted anyway, I don't know if they take into account medications and such things that could alter the sample. I dunno. Bah... I need some serious luck in the next 12 hours...

 

Wow, congrats on the offer. I'll be hoping, praying, and keeping my fingers and toes crossed for ya. Wish I could offer more advice, but I can't really think of anything else. I haven't had anything in almost two months now because I have been trying to put the job search into double time myself.
I'll be thinking about ya
Good Luck, you deserve some I think

 

Thanks for the good vibes! I'll be riding them 'til the last minute