Chronic kidney disease (CKD) Stage 3 means that your estimated glomerular filtration rate (eGFR) is between 30 and 59 milliliters per minute per 1.73 meters squared and has been so for at least 3 months. The eGFR is calculated by using the measurement of creatinine that is found in your blood and entering it into an equation. The creatinine test is measured by a machine that measures many different substances in your blood, including the serum creatinine. You can see the equation for calculating the eGFR by going to our web site at: https://www.kidney.org/professionals/KDOQI/gfr_calculator
There are many different diseases that cause CKD. You can read about CKD on our web site at: https://www.kidney.org/sites/default/files/docs/11-50-0160_jai_patbro_aboutckdv2lr.pdf
Many people live with a single kidney and can lead a normal life.
Information about the first successful kidney transplant can be found at: http://www.pbs.org/wgbh/aso/databank/entries/dm54ki.html
For diet information about CKD, I suggest that you consult with a dietitian who can visit with you about your kidney disease and review your current diet to see if changes should be made. The diet should be individualized to each patients disease and needs. There is no single diet that can be recommended for all Stages of CKD. Diet must be specific to each patient.