528. Use of specimens.

In proceedings for the hearing of an appeal against a finding that a relevant charge1 has been proved, evidence of the proportion of alcohol or any drug2 in a specimen of breath, blood or urine provided by or taken from the appellant must3 be taken into account and it must be assumed that the proportion of alcohol in the appellant's breath, blood or urine at the time of the alleged offence was not less than in the specimen4. A specimen of blood must be disregarded if it was improperly taken5, and where at the time a specimen of blood