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.
Many married women still use the title with their spouse's last name but retaining their first name (e.g., Mrs Jane Smith). Other married women choose not to adopt their spouse's last name at all. It is generally considered polite to address a woman by Ms rather than Mrs, unless the preference of the woman in question is clearly known.