Creatinine is a waste product filtered by the kidneys, and elevated levels can indicate kidney dysfunction or other health issues. Learn what creatinine levels are normal, what causes high creatinine , and how to prevent and treat it. Learn the causes & symptoms of high creatinine levels . Discover when to worry and explore effective treatments. Manage your kidney health now! Learn when creatinine levels become concerning, what causes elevated levels , and how to protect your kidney health through proper monitoring and lifestyle changes.