My doctors says my creatin level is 1.6. she is not concerned says this may be my normal. 51 yo male 6'4" tall weigh 165. should i be concerned?

Outside normal range: The kidney function (by creatinine clearance) is slightly below expected. May vary due to hydration status or other factors. Would consider having test repeated and if still abnormal, would consider nephrology consultation.

Mildly elevated: Ones state of hydration affects the kidney blood tests. The major concern would be for all cardiovascular risk factors. It merits a thorough evaluation by ones doctor.

Creatinine 1.6: This value is truly elelvated, particularly for your body weight; so yes, you should be concerned; this is not normal for you; cause must be determined; diet should be adjusted a bit;