DT_Analog & 12F1822 internal voltage reference

Can I use the DT_Analog routine to read the internal 1.024 voltage reference in the 12F1822 chips?

I'm using the system in my BMS to measure the chip supply voltage and it has worked for years using an external voltage ref LM385 on one of the adc pins and a 12F683.

This is just a natural progression to reduce the component count and increase accuracy.

Any issues look likely?