Normal range of urea blood test

Hi friends,
My uncle sufferd a lot from some health problems and is not well from some time so, when I took him to to the doctor he told us to get a urea blood test done and show him the reports. So, today we went to the pathology for the test and going to get the report at evening. I want to know that how to chek the range of the test. Means how to know that he is at lower level or upper level of urea blood range scale.
Can any one please tell me the way to chek that out?

Hello prabodh,
Normal human adult blood should contain between 6 to 20 mg of urea.