I had two tests very close together for diagnosis. and the results (low 60s) were almost identical. I was automatically given my second test after the first results, and assumed it's simply a double check in case of possible errors/problems.
I was initially told by my nurse to cut down on sugar, and having discovered this should be all carbs, reduced my HBA1c to pre-diabetic levels within a couple of months. My GP suggested trying the Atkins (low carbohydrate/ketogenic) diet, and these two pieces of advice have kept my glucose levels well under control, so definitely take on board the good advice and pointers given in previous posts!