I have answered this question before, but here it is again:
Things you want screened a the docs:
CBC - will tell you if you have polycythemia
Lytes (sodium, potasium, e.t.c.- an indication of kidney function
Creatinine, and Urea - kidney function -these may be artificially high due to protein intake, and if you have gone off-cycle, muscle catabolism
protein urea - an indication of kidney damage - to be done if your lytes, creatinine or urea are elevated
Billirubin - if enzymes elevated
Blood lipid levels
glucose - fasting blood sugars if possible.
testosterone levels - if off cycle.
estrogen - if test levels low.
LH - if test levels low.
non blood work tests
EKG. - to check for cardiac arythmias and normality or changes. An ekg can indicate things such as for example left-sided cardiac hypertrophy.