I live in California and have given a blood and urine sample for the purchase of Term Life insurance. The results came back and cannabis was not screened for. I was approved and so was my wife. She stopped smoking 4 days prior to the test and I stopped 1 day prior to the test. We usually smoke about 5 days out of the week. Synthetic urine is great for passing just a drug test, but the sample won't be accurate for all the other tests they administer. It would be too healthy of a sample which could raise a red flag. They usually run about $1,100 worth of testing and will give you the results for free, pass or fail anyway. Might as well take advantage of them. If cannabis is all you're worried about then you should be fine.