Creatinine Levels And Kidney Function. They are usually checked with another kidney function marker called bun or blood urea nitrogen. The patient was a body builder who takes large sums of supplements including biotin and creatine each day.

Your doctor can measure creatinine levels in both your blood and in your urine. As the kidneys become impaired for any reason the creatinine level in the blood will rise due to poor clearance of creatinine by the kidneys. That s because the level of creatinine in your blood is affected by your age race gender and body size.
Your doctor can measure creatinine levels in both your blood and in your urine.
Eating lots of protein may also produce small amounts. This will result in an increased creatinine level. Looking at how much creatinine is in your blood is not the best way to check your kidney health. That s because the level of creatinine in your blood is affected by your age race gender and body size.