The only way to thwart this is by supervised urine
collection (ie, a staff member observing urine
leave the patient’s body and fill the cup). While this is required for forensic urine testing, it could be the ruin of a typical medical practice; it is upsetting for patients and demoralizing for staff.
•To avoid the possibility of urine specimen substitution, oral fluid can be collected for use with screening devices employing technology similar to on-site, POC urine screens.