**Note: All laboratory testing requires an authorizing physician. DHA Laboratory offers a Patient Direct Program that partners you with an authorizing physician. If you have any additional questions regarding the availability of testing, please contact our laboratory by telephone or email.**
Cystatin C may be used as another option to creatinine and creatinine clearance to screen for and monitor kidney dysfunction in those with known or suspected kidney disease. It may be especially useful for example where creatinine measurement is not needed, for example, in those who have liver cirrhosis, are very obese, are malnourished, or have reduced muscle mass. Having a Cystatin C test done may also be beneficial in the early detection of kidney disease when other test results may still be normal and an affected person may have few, if any, symptoms.
Patient Preparation: Overnight fasting is preferred.