high Creatine result in blood test

Hi,
I went to see my GP a couple of weeks ago regarding a condition that he recommended a general blood test for (I'm of that age ;). I started UT about 2-3 months ago, drinking half a small cup mid-flow, 1st urination of the day.
I have been called back for a further test due to a high (although not worryingly high) Creatine (or possibly Creatinine) reading. Is it possible this may have been caused by my UT ? ...and has anyone else experienced this?.....or am I just heading for kidney failure?

Also, I started UT as a preventative rather than in response to any condition.
Thanks in advance. Tweet