Calculating EGFR with Cystatin C?

[Connor 25257]

Hey everyone. Got bloodwork done recently. And had a question. I had a Cystatin C test done and it came back at a 0.7 with a reference range of 0.6-1.0. My creatinine was a 1.31. Was the EFR score of 78 that i received based off the creatinine ratio or the Cystatin C???? On an online calculator combined the creatinine and Cystatin C; I was given a 105????

 

[Dr JIM]

Hey everyone. Got bloodwork done recently. And had a question. I had a Cystatin C test done and it came back at a 0.7 with a reference range of 0.6-1.0. My creatinine was a 1.31. Was the EFR score of 78 that i received based off the creatinine ratio or the Cystatin C???? On an online calculator combined the creatinine and Cystatin C; I was given a 105????

While both creatinine and cyststin-C can
be used to estimate GFR, cystatin may be more reliable patients with disproportionate muscle mass such as BB.