GFR: You are 25 and male, race would help to compute GFR. A google search for MDRD would help. I am assuming you have mentioned weight to suggest low muscle mass. That can be true. If you or your MD is worried about Kidney disease, a 24 hour urine creatinine clearance may be useful. A repeat lab may be the best step, Creatinine can change each time by 0.1 to 0.3. A different lab may be the way to go.
Answered 6/24/2016
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