Creatinine : From the American Journal of Hypertension from April of 1988 they did a longitudinal study of creatinine levels. They varied from 14 to 20% over time. So if your creatinine was 1 at anytime when measured your creatinine might vary from 0.8 to 1.2. BUN varies too. I do not see any reason for concern.
Answered 12/14/2019
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