That is a great question! Your testing may or may not be affected. It depends upon several things. The valium dosege of the pill you took, your metabolism, and the length of time between ingestion and it passing through your system may make it possible that little or no traces are found. You have said that you have no prescription for it, so if it pops up, there may be an issue, so I’d strongly suggest that you tell the paramed what transpired, so there is no hint of dishonesty. Most of what they will test you for will have to do with your kidney, liver and heart functions, whether you smoke, and if there are narcotics in your system. Depending upon the company, and the amount of insurance you are applying for, they might be very strict, or they may not be. If you are applying for a very large amount of insurance, expect them to be. Again, just be honest with the paramed when they come to take your sample. They will make a note that will explain the trace amount should it flag. I hope that helps you, thanks for asking!