I've used these guys Blackstone Labs
There are various options out there but I've been using them for awhile. It costs $22.50 to analyze a sample, they provide commentary on how your engine is doing, recommendations for extended oil durations, viscosity of the oil, if there is any insoluables(dirt/grit) in the oil, the oils flashpoint, etc.
Oil analysis is how I found out one of my previous cars had coolant seeping into the oil. I found out the car I was using had a known issue where the lower intake manifold gasket would fail and leak oil internally. The wear was very bad but once I fixed the issue the engine was showing a respectibly small quantity of wear metals.
You might also want to see if there are any analysis results from the NAPA kit that you are asking about, I haven't come across anything but I haven't been looking through the site as often in the past two years as I used to.
Here are 3 UOA(Used Oil Analysis) results for the Honda Insight, you will need to scroll up because I searched for the results so the links ended up at posts in the middle instead of at the top:
The first one is with Honda 0w20, the next two is a different Insight with Penzoil Platinum Synthetic 0w20. I'm not sure what is going on with copper, he thinks it may be a reaction between the magnesium pan and copper in the fumoto valve since he is seeing greenish around the mating edge. He hasn't followed up with another sample yet, but it looks like he gets about 7,500 miles every 9 months. It's possible he is running a 10,000 mile run or something this time.
Honda 0w20, Honda Insight, 4875miles - Bob Is The Oil Guy
PP 0w-20, 7501 Miles, 2000 Honda Insight - Bob Is The Oil Guy
PP 0w-20, 5126 Miles, 2000 Honda Insight - Bob Is The Oil Guy