serum creatinine (mg/dL) | |
urine urea (mg/dL) | |
serum urea (mg/dL) | |
urine creatinine (mg/dL) |
Fractional excretion of urea = ((serum creatinine [mg/dL] X urine urea [mg/dL])/(serum urea [mg/dL] X urine creatinine [mg/dL])) X 100
Results are given in %.