If this job is really important to you you can buy a home test kit and test your donor.

You should also practice your subbing run by getting the container you are going to use fill it with about 2 ounces of water and securing and checking to see if you can keep it at body temp. If the sample starts off at 90-100 degrees your body heat will keep it around 96 degrees unless there is too much cloth or wrap insulating the body heat from the container.
FakeBoobsRule Reviewed by FakeBoobsRule on . So I have a pre-employment test 640SN SAP 5-50 GC/MS... So I have this pre-employement test tomorrow and I've spent all weekend working on detoxing myself. Thats plan B, Plan A is to use a substituion and make sure that the temp is right around 95 degrees. My question for you guys is if any of you know about the 640SN SAP 5-50 GC/MS test....is this a standard test, or a more accurate one? The substitution i'm using is from someone who doesnt smoke weed at all. BUT he did do some speed on 10/31, I wont be picking up the substitution till 1 hour Rating: 5