(1) An analyst at an authorised laboratory must conduct an analysis of a portion of a body sample other than urine to determine:
(a) the concentration of alcohol in the blood; or
(b) whether the body sample contains a prohibited drug.
(2) An analysis of another portion of the sample must be conducted if the first analysis of a portion of the sample indicates the presence of alcohol or a prohibited drug in the sample.
(3) The sample for the second analysis must be taken from the same container from which the earlier sample was taken.