See your doctor: Go see your doctor, tell them why you are concerned, and they will order tests to find out.
Answered 10/4/2016
5.3k views
Labs mostly: The screens are (1) elevated blood urea nitrogen; (2) creatine elevated above what's appropriate for you (be careful, when i was lifting every day mine was 1.7 which might get me sent to a nephrologist today), (3) inability to concentrate urine over 1.020 (or getting up at night); (4) urinalysis (or your urine looks abnormal, especially red-brown).
Answered 10/24/2013
4.8k views
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