Who directs non-routine urine sampling?

• A. Directed by the site supervisor
• B. Directed by RHP, DHP or RPC
• C. Randomly chosen by worker
• D. Not required

Answer: (B)

Non-routine urine sampling is governed by radiological protection personnel who supervise internal contamination monitoring. In practice, the decision to collect a non-routine urine sample, when it is appropriate, who collects it, and how it is handled all come from qualified health physics staff. This includes Radiation Health Physicists (RHP), designated Health Physicists (DHP), or Radiation Protection Coordinators (RPC). Their role is to ensure the sampling is needed, properly executed, and documented, so the results reliably reflect any internal uptake and can guide appropriate actions.

The site supervisor handles daily operations, but directing non-routine radiological sampling isn’t within that scope. A random choice by a worker would bypass essential safeguards and chain-of-custody requirements, risking inaccurate results. And it isn’t true that sampling isn’t required—when there’s potential exposure or abnormal circumstances, directed sampling is necessary to protect worker health and meet regulatory and internal requirements.