I need to hear something about Feb (This month) 2012 for Labcorp. Will they know it is fake?

Under DHHS regulations, labs determine a "non-human" sample by checking the creatinine and specific gravity. Under DHHS criteria, a "non-human" sample is ruled when the creatinine concentration is less than 2 mg/dL and the specific gravity is less than or equal to 1.0010 or greater than or equal to 1.0200 on both the initial and confirmatory creatinine tests (i.e., the same colorimetric test may be used to test both aliquots) and on both the initial and confirmatory specific gravity tests (i.e., a refractometer is used to test both aliquots) on two separate aliquots.

As long as the synthetic batch is unexpired and had been stored properly (ie no exposure to direct sunlight), it will pass the validity checks permitted by DHHS.

You can always test your QF batch with a validity test strip to see if the creatinine, SG etc, are all within acceptable ranges. These tests are inexpensive and can be found online by doing a Google search for drug adulteration test kits.