We do not see a problem as long as you get enough urine for both the POCT and lab test which for the lab test should be a minimum of 30mL.
Monitored Collections DOT If you use a multi-stall restroom, you must either: Secure all sources of water and other substances that could be used for adulteration and substitution (e.g., water faucets, soap dispensers) and place bluing agent in all toilets or secure the toilets to prevent access; or Conduct