The results of the test mean the following: 1  a GFR of 60 or more is in the normal range. 2  a GFR of less than 60 may mean you have kidney disease. 3  a GFR of 15 or less is called kidney failure.
Family name is one that is shared with the family, but is not necessarily the surname. A good example to sum all this up would be the name of the main character of Kidnapped, David Balfour of the Shaws. His family name is the Shaws, but he is addressed as Mr. Balfour. His surname, in this case, is the same as his last name.
In Spanish, the last name has a name of its own, it is called apellido. The proper translation to English is surname, a term that is seldom used in the U.S. Surname (or apellido) does not mean last.. So, when you talk about someone's last name you talk about their apellidos (surnames) since there are two of them.