—(1) Any officer of the Bureau, immigration officer or police officer not below the rank of sergeant may, if he reasonably suspects any person to have committed an offence under section 8(b), require that person to provide a specimen of his urine for urine tests to be conducted under this section.
(2) A person who fails, without reasonable excuse, to provide a specimen of his urine within such time as may be required by any of the officers referred to in subsection (1) shall be guilty of an offence.
(3) Any person (other than a citizen of Singapore or a permanent resident) arriving in Singapore by land, sea or air who —
fails to comply with the requirement of an immigration officer under this section; or
may be prohibited from entering or remaining in Singapore.
(4) A specimen of urine provided under this section shall be divided into 3 parts and dealt with, in such manner and in accordance with such procedure as may be prescribed, as follows:
a preliminary urine test shall be conducted on one part of the urine specimen; and
each of the remaining 2 parts of the urine specimen shall be marked and sealed and a urine test shall be conducted on each part by a different person, being either an analyst employed by the Health Sciences Authority or any person as the Minister may, by notification in the Gazette, appoint for such purpose.
(5) Notwithstanding subsection (4), where upon conducting any preliminary urine test under subsection (4)(a), a part of a urine specimen has tested negative for controlled drugs, any of the officers referred to in subsection (1) may either discard the remaining 2 parts of the same urine specimen or proceed in accordance with subsection (4)(b).
(6) A certificate stating the result of a urine test shall be signed by an analyst employed by the Health Sciences Authority or any other person that the Minister, by notification in the Gazette, appoints for such purpose.
(7) The certificate stating the result of a urine test may be signed by an analyst or person appointed under subsection (6) notwithstanding that he did not personally conduct the test to analyse the urine specimen as long as the test was conducted by another person acting under his direction.
(8) In this section, a specimen of urine may be collected from a person on different occasions within the time referred to in subsection (2).