Blood glucose post prandial is 81.00 but serum insulin is2.7?

What's your question. Why was your serum Insulin checked in first place? What's the reference range given for insulin? How did your ordering physician interpret test for you? Why was blood drawn after a meal b/c you need to be fasting in order to calculate your homa-ir? As you can see, too many questions need to be addressed before we even get to your question, whatever it is!