The difference in the units is because one was a spot urine as one a 24 hour urine. I don’t think you can translate. You also might find slightly different normal ranges for the same reason.

Regarding the test not differentiating between inorganic and organic. This requires speciation testing. Perhaps this is only done on 24 hour samples. You could call the lab and ask them.

A good way to know if a lab is a good one is to note if they do reflex speciation. Again , it may be that this is only possible on a 24 hour sample.

The way I read your tests, it’s possible this is all artifact as you did a spot urine. A 24 hour test is the “gold standard “. Get hat test done and seee where u stand. Avoid seafood for a full 72 hours for the best results.