MathLiveGlomerular filtration rate
Estimates the rate at which the kidneys filter plasma by dividing the urine concentration of a marker substance times the urine flow rate by its plasma concentration. It is used to assess kidney function.
\mathrm{GFR} = \frac{\mathrm{U}_{x} \times \dot{V}}{\mathrm{P}_{x}}What the symbols mean
| glomerular filtration rate, the volume of plasma cleared per unit time (mL/min) | |
| urine concentration of the marker substance x (mg/mL or mmol/L) | |
| urine flow rate, the volume of urine produced per unit time (mL/min) | |
| plasma concentration of the marker substance x (mg/mL or mmol/L) |
About this formula
- FieldBiology and medicine
- TopicRenal physiology
- LevelUniversity
- Also calledGFR formula, renal function test, creatinine clearance, kidney filtration rate, urine clearance formula, clearance formula
- SourceWikidata Q1542839
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