Best Oil Analysis?

My question is would would be better of for me to start with so I don't have to do my first sample with one lab and then do another with someone else. Would like to be consistent.
Great, I read you 5x5.

Cant help you on the car oil analysis lab, the ones I use are industrial so have no direct experience with the ones commonly referenced here.
 
ALS (lab for Wix and Napa kits) is better than Blackstone.

Blackstone seems more interested in "humorous" comments rather than quality results. Not to mention, they charge a signficantly higher price compared to the Wix and Napa kits.
 
I also do thru Amsoil.I have a '19 Tiguan, 10,000 mile O.C.I have 6 year 72,000 mile warrenty.I want to be knowledgeable and pro active.This is serviced at a dealer.This is a good paper trail as I hear V.W.can be strict if something comes up.FWIW.I don't use Amsoil in my car,but use their products extensively.
 
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