I'm sorry you have microalbuminuri.
I've had the test twice and both times there was microalbuminuria, the last one was somewhere around 30, unlikely diabetes related though (I've not had diabetes long enough), so can't really comment there. I do another overnight collection before my next appointment in May.
What my diabetes educator told me about it is that it's early sign of potential kidney disease but early treatment of this can sometimes reverse the kidney disease. A normal health kidney permits only a small amount of albumin which is a protein in the blood to enter the urine. A kidney that has been damaged cannot hold back as much albumin and the level in the urine increases.
I hope the med your on helps.