Adding water to sample?

thomassd76 · 02-03-2009, 05:45 AM

I read through every post in the Substitution thread and used the Search tool as well, but had no luck finding a case where a clean sample was a little shy of the 2oz minimum and wondered if I could add a little water to fill the bottle. I've passed several tests using N2's dilution method, but decided to take the lovely and talented knotme66 and Sec's advice and go with substitution (now that I know the drill). Anybody think there'd be a problem topping off my sample with a few drops of tap water?

**lew scannon** · 02-03-2009, 01:32 PM

I dont think a "few drops" is adequate enough for a true top-off.

Before topping off, how do you know for sure that the sub sample youre using is not at, or near borderline dilute?

Most collection facilities, following proper protocol, secure all water sources inside the bathroom to prevent tampering anyway.

thomassd76 · 02-03-2009, 01:39 PM

Hey Lew! Thanks for responding. What I've got is probably 1.5 oz of 100% clean urine (from my daughter the nurse). It's a mid-day void, dark yellow in color, but no way to know for sure how diluted it might be, I'm afraid.

**lew scannon** · 02-03-2009, 01:44 PM

Quote:

It's a mid-day void, dark yellow in color, but no way to know for sure how diluted it might be, I'm afraid.

You would have to test it with a vaildity test strip to be sure. They are available online by doing a Google search for drug adulteration test kits. Dont rely too much on color. Even samples with a nice yellow color can still fall below the acceptable limits for creatinine and specific gravity.

thomassd76 · 02-03-2009, 01:52 PM

That's cool. I'm going to run up and get a home test now, as my test will likely be this afternoon. If it's good, then I wonder if adding 15-20% tap would show as a diluted sample?

**lew scannon** · 02-03-2009, 02:04 PM

Quote:

Originally Posted by thomassd76

That's cool. I'm going to run up and get a home test now, as my test will likely be this afternoon.

Be sure the home test includes checks for creatinine and SG; otherwise, you'll be wasting your time and money.

Quote:

Originally Posted by thomassd76

If it's good, then I wonder if adding 15-20% tap would show as a diluted sample?

Test it again after topping, and find out for sure.

thomassd76 · 02-05-2009, 02:50 AM

Hey lew...

Got lucky and had enough to fill the 2 oz bottle after all. Thanks for your help anyway!

02-03-2009, 05:45 AM	#1
thomassd76 New Member Join Date: Dec 2008 Posts: 79 Grams: 1,512.25 Thanks: 14 Thanked 15 Times in 14 Posts Stock Portfolio Total Value: 0.000 Gain/Loss: 0.000%	Adding water to sample? I read through every post in the Substitution thread and used the Search tool as well, but had no luck finding a case where a clean sample was a little shy of the 2oz minimum and wondered if I could add a little water to fill the bottle. I've passed several tests using N2's dilution method, but decided to take the lovely and talented knotme66 and Sec's advice and go with substitution (now that I know the drill). Anybody think there'd be a problem topping off my sample with a few drops of tap water?

02-03-2009, 01:32 PM	#2
lew scannon Moderator Join Date: Jun 2005 Posts: 1,834 Grams: 24,876.89 Thanks: 496 Thanked 479 Times in 383 Posts Stock Portfolio Total Value: 0.000 Gain/Loss: 0.000%	I dont think a "few drops" is adequate enough for a true top-off. Before topping off, how do you know for sure that the sub sample youre using is not at, or near borderline dilute? Most collection facilities, following proper protocol, secure all water sources inside the bathroom to prevent tampering anyway. Last edited by lew scannon : 02-03-2009 at 01:38 PM.

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