Why do I need a GFR test?Early stage kidney disease doesn’t usually cause symptoms. But you may need a GFR test if you are at higher risk of getting kidney disease. Risk factors include:DiabetesHigh blood pressureFamily history of kidney failureLater stage kidney disease does cause symptoms. So you may need a GFR test if you have any of the following symptoms:Urinating more or less often than usualItchingFatigueSwelling in your arms, legs, or feetMuscle crampsNausea and vomitingLoss of appetite
