Until the warranty is expired, run the factory recommended changes.
After that, you can either go with 10,000 miles and figure it's fine, or start incrementing the oil change interval up in steps and test the oil.
On my other car I sent oil in for analysis to make sure I wasn't leaving it in too long. I ran 10,000 mile oil changes most of the time, always using Mobil 1 and a quality filter (Mobil 1, Wix, or Napa Gold). Since the oil always came back within specs and without excess contamination, I could probably have tried 12,000 miles.
Where do you have it tested? Often thought of doing this but never have.
I have always thought that the creators of the Jiffy Lube franchize pulled off the advertizing scam of the century when they managed to brainwash the entire nation by recommending changes at 3k when at the time car and oil manufacturers were recommending 5k and most (Toyota included) still do recommend 5 or even more!
I use synthetic in all my vehicles and change the filter also at 6K. On the bike I change @ 3k but that's because it's an air cooled large diplacement and I like to work on it but should check them all the next time around to see if I could go more.