Equations of White et al for Estimating GFR Using Beta-Trace Protein (BTP)

 

Parameters:

(1) serum beta-trace protein in mg/L (measured by nephelometry on a Dade Behring Prospec analyzer)

(2) serum creatinine in µmol/L (measured on a Beckman Coulter LX20)

(3) serum urea in mmol/L (measured on a Beckman Coulter LX20)

(4) gender

Gender	Equation	Points
male		1
female	urea	0.88
female	creatinine	0.871

 

GFR in mL per minute per 1,73 square meter BSA =

= (112.1 * ((BTP)^(-0.662)) * ((urea)^(-0.280)) * (points for gender))

 

GFR in mL per minute per 1,73 square meter BSA =

= (167.8 * ((BTP)^(-0.758)) * ((creatinine)^(-0.204)) * (points for gender))

 

where:

• The abstract incorrectly reports the creatinine equation's factor as 1.678.