Malacañang has reiterated that President Marcos will not undergo hair follicle drug test, saying he will not give in to any provocation from his critics.br br Responding to the dare of Senator Imee Marcos that she would agree to undergo a DNA test if the President agrees to do a hair follicle test, Palace Press Officer and Communications Undersecretary Claire Castro said Marcos will not be swayed by such demand as the issue has long been resolved.