Going to the doctor this week. It's an opportunity to see what my supplement levels are at.

Should I stop taking my supplements in advance of the test (in order to get an accurate reading)? If so, how long before?

In addition to the usual blood and urine work, I will ask him to test for:

Uric Acid
B6
B12
Vit D
Magnesium

Anything else? B1 perhaps?

Thanks.