Well, if you mean blood tests, these are the ones I generally get when I have my annual physical (I am 58, in good health, take no meds):
Cholesterol
HDL/LDL
Triglycerides
C-Reactive Protein (CRP)
Homocysteine
Vitamin D Hydroxy
PSA
Vitamin B12
Thyroid (TSH)
They also routinely do a Complete Metabolic Panel, which includes things like Blood Glucose, Sodium, Calcium, Albumin, etc.; and a CBC, which includes things like Hemoglobin, Basophil, Lymphocyte, etc..
If you are interested in things like heart disease risk, the ones to make sure you get are Cholesterol, HDL/LDL, CRP, and Homocysteine. You could take it one step further and get the particle size LDL test also, but I haven't had that done yet. I would do it if I thought my heart disease risk was relatively high, though. If your blood glucose number comes back relatively high, you could have them do an A1C test, which I believe measures blood glucose over a longer period of time (previous 2-3 months), to see if there is any indication of diabetes or pre-diabetes.
Perhaps MeadBH or one of the other doctors will chime in with their recommendations........these are just the tests I get.