Creatinine is a natural waste product made by your muscles during regular energy use. Normally, your kidneys filter it out through urine. But when your creatinine levels rise above the healthy range, ...

With kidney disease on the rise worldwide, we asked the nation's top specialists to share the early signs of the condition.

Melanie Hoenig was teaching first-year medical students how to estimate kidney function when one of them, Cameron Nutt, raised his hand. Why, he asked, did the diagnostic algorithm include an ...