Failed Wallgreens and passed Quest (Concerta) test

Just an FYI to let you know that it can be done. I found this site after the tests and could not benefit from the many options. With 8 days clean (casual once a week smoker) i was called in for a pre employment screen. Took the test (easy to use QuikFix at Concerta doc n boxes btw..wish i had know this info going in) in the late afternoon. Drank coffee in the am and one 20ox water on the way down. Got worried and bought a Wallgreens test on the way home. Tested positive..did another one the next day and also tested positive. Got the call from the employer today that I am good to go. No explanation for this..maybe a gift of Karma..who the hell knows. I am big at 218 with plenty of areas for metabolite storage in fat tissues. Just wanted to give some people hope that good things can happen. I am going to refrain for a few months as they could random test me particularly if the Quest test showed amounts of THC metabolites that were below the cutoff. How did this happen?:)

Dude.

I have no idea.

But I hope I have your luck, as I have a drug test wednesday, and I actually tested negative on my at home drug tests. I bought the ones at Target though, "First Check".

I just took a Walgreens test and tested positive. Been clean for 26 days from a couple of steps up from dirt weed.

I have already subbed Thursday...but paranoid because if it comes back from the lab screwed I have already started job and they will test onsite...I MIGHT get a bottle or two of water or other liquid down before I would have to pee. I can't carry anything on me all day because of the kind of industry I am subject to being patted down at any given point.

Hoping Walgreens test just sucks.

I'm not a big person...average with a few extra pounds... apparently too many extra! But up until 26 days ago I was also a heavy smoker of the dirt weed too.

Quote:

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Originally Posted by rb12345

Just an FYI to let you know that it can be done. I found this site after the tests and could not benefit from the many options. With 8 days clean (casual once a week smoker) i was called in for a pre employment screen. Took the test (easy to use QuikFix at Concerta doc n boxes btw..wish i had know this info going in) in the late afternoon. Drank coffee in the am and one 20ox water on the way down. Got worried and bought a Wallgreens test on the way home. Tested positive..did another one the next day and also tested positive. Got the call from the employer today that I am good to go. No explanation for this..maybe a gift of Karma..who the hell knows. I am big at 218 with plenty of areas for metabolite storage in fat tissues. Just wanted to give some people hope that good things can happen. I am going to refrain for a few months as they could random test me particularly if the Quest test showed amounts of THC metabolites that were below the cutoff. How did this happen?:)

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Sounds like you got lucky.lol I'll take luck any time. I would check into the subbing and develop a plan for randoms. Once you have a plan they're as easy to beat as pre-employement UA's. Congrats.

I found an interesting link on the Quickscreen tests. (This is the one I bought at Walgreens)

Hope it is not considered spamming.

I find it interesting that Ibuprofen is not on their list of compounds that will not interfere with test results..... think I will try another brand of test since I take massive amounts of Ibuprofen.

Marijuana Test Kit, Information on Passing Drug Test

QUICKSCREENâ?¢ 10 Minute Urine Test for THC (Marijuana)

LIMITATIONS OF THE TEST
1. This product is designed to be used for the detection of Cannabinoids in urine only.
2. Although the QUICKSCREENâ?¢ 10 Minute Urine Test Strip is very accurate in detecting the urine Cannabinoids level, there is a possibility of false results due to the presence of interfering substances in the urine.
3. Adulterants, such as bleach or other strong oxidizing agents, when added to urine specimens, may produce erroneous test results regardless of analysis method used. If adulteration is suspected, obtain another urine specimen.

PERFORMANCE CHARACTERISTICS
SENSITIVITY: The QUICKSCREENâ?¢ 10 Minute Test Strip has been designed for the detection of Cannabinoids in urine at the detection sensitivity of 50 ng/ml which is suggested for the immunoassay method. In house testing on a total of 249 samples by both GC/MS and the QUICKSCREENâ?¢ 10 Minute Urine Test Strip yield a sensitivity of 1.00.

SPECIFICITY: The QUICKSCREENâ?¢ Ten Minute Urine Test Strip can specifically detect 11-nor-D-9-tetrahydrocannabinol-9-carboxylic acid at levels of 50 ng/ml (0.1 Fg/ml) or higher. The in house data yields a specificity of 1.00.

ACCURACY: Based on the In House evaluation for 249 individual patient urines the QUICKSCREENâ?¢ 10 Minute Urine Test Strip had an accuracy of 100%.

Table 1 - Compounds that Give a Positive Reaction

Compound

Level of Positive Reaction
11-nor-D8-THC-9-COOH
50 ng/ml.
11-nor-D9-THC-9-COOH
50 ng/ml.
D8-THC
1Fg/ml
D9-THC
4Fg/ml
Cannabinol
10Fg/ml
11-hydroxy-D9-THC
10Fg/ml

Table 2 - Compounds that will not interfere with test results at concentrations up to 100Fg.ml (Unless Noted)
Acetaminophen
Hydromorphone
4-Acetamidophenol
Acetylsalicylic acid
Amikacin
Ampicillin
d,1-Amphetamine
Ketamine
Amitriptyline
Arterenol
Aspartame
Atropine sulfate
Benzoic add
Benzoyl ecgonine
Caffeine
Camphor
Chloroquine
Chlorpheniramine
Chlorpromazine HCI
Cocaine Hydrochloride
Cocaine
Cimetidine
Cortisone
Deoxyepinophrine
Dextromethorphan
Diazepam
Digitoxin
Digoxin
Ecgonine Hydrochloride
Ecgonine Methyl Ester
Ephedrine
Epinephrine
Gentisic acid
Glucose
Guaiacol
Glyceryl ether
Histamine
Hydrochlorothiazide
Hydrocodone
Homatropine
Imipramine
Isoproterenol
Lidocaine
d-Methamphetamine
Meperidine
Methadone
Methaqualone
Methlpehnidate
Morphine glucuronide
Morphine sulfate
Morphine
Naloxone
Neomycin
Niacinamide
Oxazepam
Perphenazine
Penicillin G
Phencyclidine
Phenobarbital
Phenyletylamine-
Phenylpropanolamine
Promethazine
Pseudoephedrine
Rantidine
Salycycic acid
Secobarbital r
Tetracycline
Tetrahydrozoline
Theophylline
Thioridazine
Trifluoperazine
Tryptophan