It is recommended a licensee not drink more than 8 oz. of fluid and provide urine sample first thing in the morning (avoid coffee as it can act as a diuretic). Leaving the collection site without providing a sample is not an option. Contacting the case manager and or providers will not excuse the drug screen. You must remain at the collection site and provide a sample. If you leave the site and do not provide the sample it will result in an automatic positive.