Failed with synthetic-Will they know if I sub with real?

[boofus1]

I failed my first test with synthetic urine and have been given a chance for a re-test. The specific gravity was too low. Will they know if I re-test with human urine? Also does anyone know if the second collection will be observed? It's LabCorp.

[GrassIzGreenah]

@boofus1 seriously?? thats scary...how was the s/f too low? what brand? was the batch number legit? did u call the company...ohh lawdd ya got me freakingg out!!