Who decides whether a specimen is to be blood or urine?

• A. The magistrate.
• B. The person providing the specimen.
• C. The medical practitioner.
• D. The officer making the requirement.

Answer: (D)

The officer making the requirement decides the form of the specimen. In drink- and drug-driving investigations, police have the authority to specify whether a specimen should be blood or urine (and may also request breath in other circumstances). The person providing the sample is obliged to comply with the officer’s direction; they do not choose the type. A medical practitioner is the one who collects the specimen as directed, not the one who decides which type is required. The magistrate comes into play later in the process for warrants or court decisions, not for the immediate choice of specimen type.