yes gfr and egfr are both the same ie filtration rte of kidneys. 73 is stage 2 though not stage 3. staage 2 is between 60 and 90 :) stage three is 30 to 59.
this is a useful link that discusses likely symptoms at different sages and also what the stages of CKD are :)
It may be difficult to revert the changes due to diabetic nephropathy. But to prevent further damage, you will have to take medications regularly and check your blood sugars to ensure it is in the normal range of 80-120mg/dl. Strict adherence to a diabetic diet and regular exercise will further help to reduce blood sugars. Since your kidneys are affected you will need a more frequent blood test and follow care to prevent further damage. To lower the blood values the cause needs to be treated.
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