@vivianwaters There are many factors why a kidney function level may be "low". It might be slightly lower than your normal, and could be caused by something as simple as being slightly dehydrated the day of blood draw! Like @veteran1950 mentioned, contact your dr's office, or the lab, and get at least the last two labwork reports, so you can see for yourself what the dr is speaking about.

Do you have any underlying health conditions?
Ginger