Hi,

I had some blood work done and I got the results a few days ago.
Everything came back normal expect CREATININE (RUR) which was 18 mmol/L (normal range 4 - 13 mmol/L). Doctor did not make it a big deal, but I'm concerned since the value seems high for me. The blood CREATININE was normal, and other URINE & Blood kidney tests were all normal.

DO you have any ideas what can cause this?

Thanks
Sharik