If you are unsure of its useability, you can always test it with a validity test strip to ensure that the urine constituents (creatinine, pH, specific gravity, etc) are within satisfactory ranges. If it were me, I would run the test on the grounds that the product is more than a year old.

The validity test kits are inexpensive and are found online by doing a Google search for "drug adulteration test kits".
Burnt Toast Reviewed by Burnt Toast on . BC Entities field kit left in hot car.. is it still good?? So a year ago I was told I was going to have to take a drug test at work. On May 5th of 2012 I bought the synth urine kit by BC Entities at a local head shop. Well i ended up not taking the test and kept the kit in my closet. Then on march 15th 2013 i was hurt at work and had to go to the doctor and assumed that i had to take a test for a workmans comp claim. again i ended up not using it. however, i left it in my glove box for 3 months. it was in there while temps in the car reached anywhere Rating: 5