Why do some laboratories only report numerical values when estimated GFR is less than 60 mL/min/1.73 m2?
The MDRD Study equation is less accurate at GFR estimates greater than 60 mL/min/1.73 m2. At levels of estimated GFR less than 60 mL/min/1.73 m2, the equation is accurate for most persons of average body size and muscle mass, and therefore these estimates can be used to guide clinical decision making (see questions 26, 28-29, 31, 32).
