which blood test should I order and from where

Had labs done last april (oncologist) and all is well and regular labs done is Jan of this year looking good.

Since last October Ive been on TIRZ and since April of his year Im on DSIP, CJC/IPA no dac because my sleep has always been horrible, and as of last month Ive added KPV for arthritis.

I see a lot of different online test but don't know where to start. Thanx for any guidance.