149. For the avoidance of doubt it is hereby declared that, subject to sections 25, 30, 38, 39, 47 and 51, a sample may be taken from a person under a provision of this Act even if a bodily sample had been taken from the person under—

(a) the Criminal Justice (Forensic Evidence) Act 1990 or otherwise prior to the commencement of this section, or

(b) the same or another provision of this Act previously.