Recently, I did a Cystatin C and creatinine measurement. The issue is that in my country labs rarely do cystatin. In one lab they do not even know about it, in another only one knew about it and did the measurement. I got the results which are,
Creatinine: 1.18, normal range 0.6-1.3 mg/dL
Cystatin C: 0.78, normal range 0.31-0.79 mg/L
I am buffled about the normal range of cystatin. It seems that I am in the upper limit. When i googled it is completely different. If I calculate my gfr it comes up to 105 for a 28 year old male which is stage 1 and I do not think that I would have been stage I with a big Cystatin C.