Lab creatinine blood test levels changed from .9 to 1.2 should i worry?

Creatinine: And change from .9 to 1.2 can be significant , specially if someone is taking any medication that can cause kidney injury, or has diabetes and hypertension; however, dehydration can also cause BUN and creatinine to go higher, patient with high muscle mass and after excercising can cause an increase in creatinine, this test should be repeated if preoccupied.