Creatinine can also be performed on fluids (test mnemonic FLCREA)
Glomerular filtration rate (GFR) is the best indicator of kidney function and, in adults, can be easily and accurately estimated using the modified MDRD GFR equation. This formula uses the patient's age and sex with the measured blood creatinine value to accurately estimate GFR, allowing patients with earlier stages of kidney disease to be identified.
Creatinine laboratory reports for all adult outpatients will include a report of GFR estimated by the MDRD equation. | 
