But note the variability….two people started around 200 ng/mL, but it took one person 3 days to clear and another person over 3 weeks!Īlso note that log-transforming the urine metabolite levels gave a better prediction and explained 39% of the variability in time to clear. The higher your urine THC metabolite levels are to start, the longer it will take to clear. Initial urine metabolite levels were correlated with time to clear THC I figured this puts people in the range to consistently pass if they properly dilute their urine. This also presented a snag for my analysis…do I consider the “time to clear THC” as the time to first negative resultor the time to last positive result? I decided to split the difference and take the average of the two. The record was 28 days! In fact, it was rare to have a negative result without at least one later positive result. The time between the first negative result and the last positive result could be really long. Test results could be negative, but then later be positive Here are 4 important things that I discovered in this dataset that were used to make the detox calculator: 1. I found the right dataset in a 2008 study that took 60 potheads and (with informed consent) kept them locked in a research unit, collecting urine samples for up to 30 days. So I searched all over the interweb for the best dataset to do my own analysis. I’ve seen a lot of guides about the time to detox THC and pass a drug test, but they almost never say what data they are based on. I developed this calculator based on research of which individual characteristics actually predict time to clear THC and which ones are useless (you might be surprised!)

you will be clear sometime between 2 and 30 days) – you need to know the time to detox THC that is specific to you. It is not helpful to know a super wide range (e.g. There are many guides available, but they are not very personalized. Information on this topic is notoriously vague. Over several years of writing about THC detox, there is one question that I received more than any other: How many days will it take until I can pass a urine drug test?

How to clear a calculator