The “shy bladder” condition refers to the inability to provide a urine sample during a drug test, often due to anxiety or medical conditions. If this occurs, the individual is given up to three hours and up to 40 ounces of water to attempt another sample. Failure to provide a sample within this time frame may be treated as a refusal to test unless medically justified. Collectors are trained to handle shy bladder cases sensitively and in accordance with federal guidelines.