MUST KNOW renal formulas Flashcards
1
Q
What is the formula for filtration fraction?
A
GFR/RPF
2
Q
What is the formula for RPF?
A
=RBF(1-Hematocrit) or clearance of PAH
3
Q
What is GFR equal to?
A
clearance of inulin - UV/P
4
Q
What is the fractional excretion of water?
A
Pin/Uin
5
Q
What is the fractional excretion of solute?
A
(Us)(Pcreat)/(Ucreat)(Ps)
6
Q
What is fractional reabsorption equal to
A
1-FEs
1-(Us)(Pcreat)/(Ucreat)(Ps)
7
Q
What is the formula for filtered load?
A
GFR x Ps
8
Q
What is the formula for osmolar excretion?
A
Us x V
9
Q
What is the formula for net reabsorption?
A
GFR x Ps - Us x V
10
Q
What is the formula for net excretion?
A
Us x V - GFR x Ps
