As this OPI chemical lives in your water and bloodstream when it is in your body, it removes itself much quickly than other drugs that you can get and to be completely drug free in the tests you should wait up to a week, although in most cases this will be completely out of your body within four days. These drug tests can be conducted using urine or blood as the OPI is stored in both.
If you are concerned that this will be in your bloodstream or urine before a test, you can buy home testing kits online. These may not be reliable and could make you think that the drug is out of your system when it is not. You may not be sure what you are buying and these come with no warranty so you never know how accurate the result will be. Detection levels may vary in this and a real doctors test, a doctors test can find the drug at 2000ng/ml or higher.
Another thing to remember is that you will not know if your drugs have been cut or mixed with anything else that could remain in your body for a much longer period of time. There is a myth that drinking a lot of water will help flush the drug out but this will not stop your blood from transferring the drug waste into your urine.