Vo2 testing

Curious if anyone has had their Vo2 measured in NYC. My watches (Apple and Garmin) are giving me two completely different numbers and as I do more endurance training, I’d like to really dig into more zonal training with a more accurate understanding of where my zones are to push and maintain. Lmk if you know and/or would recommend locations/providers, experience, and cost! Thanks in advance and hope to see you guys out there.