Creatinine Test: Normal Range & Results Explained
A creatinine test is a common blood or urine test used to help assess kidney function. Because the kidneys remove creatinine from the blood and pass it into urine, an abnormal creatinine level can sometimes indicate that the kidneys are not filtering waste as efficiently as they should.
However, one creatinine number does not tell the complete story. Your age, sex, muscle mass, diet, physical activity, hydration status, medicines, and other health conditions can influence the result. Doctors often interpret creatinine together with the estimated glomerular filtration rate (eGFR), urine albumin testing, and other kidney function tests.
This guide explains what a creatinine test measures, the typical normal range, what high or low results may mean, how the test is performed, and when an abnormal result needs medical attention.
Important: The reference range printed by your own laboratory should always be considered when interpreting your result because normal ranges can vary slightly between laboratories.
 |
| A creatinine test helps healthcare professionals assess kidney function and evaluate how well the kidneys filter waste from the blood. |
