Can the creatinine clearance test be wrong?
The creatinine clearance test is generally a reliable test. Creatinine clearance is only an estimate of GFR, and in some cases can provide a result that is higher than what your GFR really is. In addition, there are a few reasons that the results could be wrong. These include:
- If you didn’t collect all urine samples as directed.
- If the math formula used to figure out your creatinine clearance isn’t done correctly.