18. (1) A sample of blood or pubic hair or a swab from a genital region or a body orifice other than the mouth may be taken under this Part only by a registered medical practitioner or a registered nurse.

(2) A dental impression may be taken under this Part only by a registered dentist or a registered medical practitioner.

(3) An intimate sample other than a sample of blood or a dental impression shall, in so far as practicable, be taken by a person who is of the same sex as the person from whom the sample is being taken under this Part.