My father has had a microalbumin level over 700mg/g for more than 3 years, with a level over 1000 for the last year, and his test last month being over 4000. He is 90 years old, has slightly elevated glucose, but very good blood pressure. Cholesterol has been a problem in the past, but he is with normal ranges now. His primary care physicians only response has been to increase his ACE inhibitor. I am wondering if these high levels for so long don't call for a referral to a nephrologist, or at least more than a slight increase in ACE inhibitor. Since the med increase, his kidneys hurt less. Thank you.