NQO1 활성은 DCPIP를 기질로 하여 600 nm 에서 흡광도를 측정하여 결정되었으며 분당 감소된 DCPIP의 나노몰로 표시되었다.
NQO1 activity was determined by measuring the absorbance at 600 nm with DCPIP as substrate and was expressed as nanomoles of DCPIP reduced per minute.