If you don't stop the supplement at least a week before testing,
you will show high values. The ranges were made from people not using supplements.

So your testing is showing you are absorbing the ingredients from the intestine well.

There are nutrients in the red cells of the blood too. If these rupture when the sample is taken, they flood the serum and test high. Potassium is another nutrient that does this easily too.
Using a butterfly needle, making the tourniquet too tight will also
burst the cells. Or handling the sample wrong in the lab can do it.
This is called a factitious result.