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Calculator: Estimated protein excretion rate from spot urine protein and creatinine in adults (conventional and SI units)


Calculator: Estimated protein excretion rate from spot urine protein and creatinine in adults (conventional and SI units)

 
Input
 
Age   yr
Sex Female

Male
Race Black

Nonblack
Spot urine protein  
Spot urine creatinine  

 
Results
 
Important: Inputs must be complete to perform calculation.

 
 
Estimated protein excretion rate  
 
Decimal precision  

 
 

 
Notes
  • The normal urine protein excretion rate is less than 150 mg/day.
  • Rates of 3500 mg/day or higher are called "nephrotic range proteinuria."
  • The estimated creatinine excretion rate has not been validated in a pediatric population (age <19 years).

 
Equations used
 
Estimated_protein_excretion_rate = (Spot_urine_protein / Spot_urine_creatinine) * Estimated_creatinine_excretion_rate

 

 
Calculation details and variables
  • For black females: Estimated creatinine excretion rate = 1148.6 + (15.6 * Age) - (0.3 * Age2)
  • For non-black females: Estimated creatinine excretion rate = 1051.3 + (5.3 * Age) - (0.1 * Age2)
  • For black males: Estimated creatinine excretion rate = 1413.9 + (23.2 * Age) - (0.3 * Age2)
  • For non-black males: Estimated creatinine excretion rate = 1307.3 + (23.1 * Age) - (0.3 * Age2)

 
Only digits 0 to 9 and a single decimal point (".") are acceptable as numeric inputs. Attempted input of other characters into a numeric field may lead to an incorrect result.

Information on this page may not appear correctly if printed.

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