2 at home tests, 1 lab test... and I'm still scared.

[Ihope]

I have a pre-employment urine screening (hospital job) this coming Wednesday, at which day it will be exactly 20 days since I last smoked (shared a joint with a friend and another joint the following day). I'm overweight, have lots of fat cells and a slow metabolism.

I took a Firstcheck test 5 days after smoking and tested negative (picture below). I then took a different at home drug test 3 days later and tested negative again (picture below). For both tests, I used the first void of the day without drinking anything first.

I continued to be anxious and found a local testing center that sends its samples to Labcorp. I paid $65, peed in a cup and received my results after 2 days. The results were negative (picture below), although it was the 3 void of the day. I even went to the gym the evening before and worked out A LOT just to see if the results would change.

The "real" test is in 4 days and I'm still worried. I have waited for this job for years and now that I'm so close (I already got my starting day), I can't stop worrying that I will lose it.

I'm pretty sure the cutoff will be the regular 50 because my future employer also uses Labcorp.

Could I possibly test positive despite having passed 2 at home tests and a lab one? Can someone please tell me that I'm crazy to be still worried and reassure me that I will test negative?

Why the lab results have no value next to Creatinine, pH and specific gravity? Should I still drink a lot before the real test and do some dilution?

Thank you.


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Ihope Reviewed by Ihope on 08-03-2013. 2 at home tests, 1 lab test... and I'm still scared. I have a pre-employment urine screening (hospital job) this coming Wednesday, at which day it will be exactly 20 days since I last smoked (shared a joint with a friend and another joint the following day). I'm overweight, have lots of fat cells and a slow metabolism. I took a Firstcheck test 5 days after smoking and tested negative (picture below). I then took a different at home drug test 3 days later and tested negative again (picture below). For both tests, I used the first void of the Rating: 5

[Burnt Toast]

Also why the lab results have no value next to Creatinine, pH and specific gravity?

The likely reason is because the $65 dollars only covered the testing of drug metabolites and not the validity tests.

[Ihope]

The likely reason is because the $65 dollars only covered the testing of drug metabolites and not the validity tests.

Thank you, that makes sense.

Should I still use the dilution method on the day of the test?

[Burnt Toast]

Not if all of your home test results have been negative using the first void of the day. Just drink only enough fluids to where youre able to produce a sufficient amount of urine sample on the day of the scheduled U/A.

[Ihope]

I received my clearance today and was explicitly told that I tested negative to all drugs. I did not use dilution. :thumbsup:

I wanted to post the update to reassure heavy-set people for whom the information on the internet is pretty fear-inducing. I believe that for non-habitual users, body fat doesn't make that big of a difference because there is no built-up THC in the body. I weigh 296 lbs, I'm only 5.4 and I was clean when I tested 5 days after smoking.

I continued to be terrified because I kept reading about how body fat is a determining factor for THC retention in the body. I do not doubt that it is a determining factor for habitual and chronic users and I understand how THC get stored in the fat cells. But if someone is a non-habitual smoker, body fat does not really make a difference and will take only a few days to get clean, in most cases.

I wish I had spared myself all that anxiety and out-of-pocket money for at home and lab tests.