19. Section 22 of the Act of 2010 is amended by inserting after subsection (4) the following:

“(4A) In a prosecution of a person for an offence under section 13B for refusing or failing to comply with a requirement to permit a designated doctor or designated nurse to take a specimen of blood or for refusing or failing to comply with a requirement of a designated doctor or designated nurse in relation to the taking of a specimen of blood, it is a defence for the defendant to satisfy the court that there was a special and substantial reason for his or her refusal or failure.”.