Two years ago i had hemithyroidectomy surgery (diagnosis : hurthle cell adenoma).at present after my routine checkup all tests fall in normal range except esr-23 mm/hr, crp-5.2 mg/l, total protein serum 8.40 g/dl, tsh- 5.77 iu/ml,vit d 18ng/ml?

The lab tests need to be interpreted by the clinician who ordered them, knowing what symptoms, if any, you are having, medical history, etc. The sed rate and C-reactive protein indicate inflammation when elevated but are very non-specific. You likely need a Vitamin D supplement since your level is very low. Your TSH is only mildly increased and should be repeated in a few months. Good luck!