Is it the method based on NADH concentration? If yes then you cannot.

https://www.biotek.com/assets/tech_resources/170/nadh3.jpg

Have a look on NADH spectrum to see what wavelength you can use..

Thank you Petro Khoroshyy, yes it is based on NADH concentration

You can measure NADH fluorescence by exciting at 340 nm and measuring the fluorescence at 460 nm.

You can use a coupled reaction to detect NADH production using diaphorase and XTT and measuring the absorbance at 450 or 460 nm, I think.

ATP production can be measured with high sensitivity using luciferase and luminescence.