Talk to Internal Medicine on I Sometimes Feel Low Energy, Especially During Exercise—are There Any Other Tests You’d Recommend?

I’m planning to get blood tests including renal function (RFT), uric acid, lipid profile, GGT, liver function, blood glucose, CBC, ESR, a hematology panel, Vitamin D, Vitamin B12, TSH, CMP, and ferritin. Since tests can get expensive, I’d prefer to avoid unnecessary ones. I’m thinking of getting these initial tests done and then showing the results to a doctor, who can suggest any further tests if needed.