## Fractional Excretion of Sodium Solution

STEP 0: Pre-Calculation Summary
Formula Used
Fractional Excretion of Sodium = (Urine Sodium Concentration*Creatinine Concentration in Plasma)/(Sodium Concentration in Plasma*Creatinine Concentration in Urine)*100
FENa = (Sodiumurinary*Creatinineplasma)/(Sodiumplasma*Creatinineurinary)*100
This formula uses 5 Variables
Variables Used
Fractional Excretion of Sodium - Fractional Excretion of Sodium is the percentage of the sodium filtered by the kidney which is excreted in the urine.
Urine Sodium Concentration - (Measured in Mole per Cubic Meter) - Urine Sodium Concentration measures the amount of sodium in a certain amount of urine.
Creatinine Concentration in Plasma - (Measured in Mole per Cubic Meter) - Creatinine Concentration in Plasma is a measurement of creatinine in blood plasma.
Sodium Concentration in Plasma - (Measured in Mole per Cubic Meter) - Sodium Concentration in Plasma is the concentration of sodium present in blood plasma.
Creatinine Concentration in Urine - (Measured in Mole per Cubic Meter) - Creatinine Concentration in Urine is measures of the amount of creatinine in a certain amount of urine.
STEP 1: Convert Input(s) to Base Unit
Urine Sodium Concentration: 0.010365 Mole per Liter --> 10.365 Mole per Cubic Meter (Check conversion here)
Creatinine Concentration in Plasma: 12 Mole per Liter --> 12000 Mole per Cubic Meter (Check conversion here)
Sodium Concentration in Plasma: 3.5 Mole per Liter --> 3500 Mole per Cubic Meter (Check conversion here)
Creatinine Concentration in Urine: 13.5 Mole per Liter --> 13500 Mole per Cubic Meter (Check conversion here)
STEP 2: Evaluate Formula
Substituting Input Values in Formula
FENa = (Sodiumurinary*Creatinineplasma)/(Sodiumplasma*Creatinineurinary)*100 --> (10.365*12000)/(3500*13500)*100
Evaluating ... ...
FENa = 0.263238095238095
STEP 3: Convert Result to Output's Unit
0.263238095238095 --> No Conversion Required
0.263238095238095 <-- Fractional Excretion of Sodium
(Calculation completed in 00.031 seconds)
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National University of Judicial Science (NUJS), Kolkata
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## < 10+ Plasma Calculators

Fractional Excretion of Sodium

## Fractional Excretion of Sodium

Formula
"FE"_{"Na"} = ("Sodium"_{"urinary"}*"Creatinine"_{"plasma"})/("Sodium"_{"plasma"}*"Creatinine"_{"urinary"})*100

Example
"0.263238"=("0.010365mol/L"*"12mol/L")/("3.5mol/L"*"13.5mol/L")*100

Calculator
LaTeX
Fractional Excretion of Sodium = (Urine Sodium Concentration*Creatinine Concentration in Plasma)/(Sodium Concentration in Plasma*Creatinine Concentration in Urine)*100
Apparent Tissue Volume given Plasma Volume and Apparent Volume

## Apparent Tissue Volume given Plasma Volume and Apparent Volume

Formula
"V"_{"T"} = ("V"_{"d"}-"V"_{"P"})*("fu"_{"t"}/"fu")

Example
"1.686747L"=("9L"-"5L")*("0.7"/"1.66")

Calculator
LaTeX
Apparent Tissue Volume = (Volume of Distribution-Plasma Volume)*(Fraction Unbound in Tissue/Fraction Unbound in Plasma)
Plasma Volume of Drug given Apparent Volume

## Plasma Volume of Drug given Apparent Volume

Formula
"V"_{"P"} = "V"_{"d"}-("V"_{"T"}*("fu"/"fu"_{"t"}))

Example
"-13.528571L"="9L"-("9.5L"*("1.66"/"0.7"))

Calculator
LaTeX
Plasma Volume = Volume of Distribution-(Apparent Tissue Volume*(Fraction Unbound in Plasma/Fraction Unbound in Tissue))
Average Plasma Concentration given Peak through Fluctuation

## Average Plasma Concentration given Peak through Fluctuation

Formula
"C"_{"av"} = ("C"_{""max""}-"C"_{""min""})/"PFT"

Example
"0.792741mol/L"=("60.9mol/L"-"27.7mol/L")/"41.88"

Calculator
LaTeX
Average Plasma Concentration = (Peak Plasma Concentration-Lowest Plasma Concentration)/Peak Through Fluctuation
Lowest Plasma Concentration Given Peak through Fluctuation

## Lowest Plasma Concentration Given Peak through Fluctuation

Formula
"C"_{""min""} = "C"_{""max""}-("C"_{"av"}*"PFT")

Example
"-776.7mol/L"="60.9mol/L"-("20mol/L"*"41.88")

Calculator
LaTeX
Lowest Plasma Concentration = Peak Plasma Concentration-(Average Plasma Concentration*Peak Through Fluctuation)
Peak Plasma Concentration Given Peak through Fluctuation

## Peak Plasma Concentration Given Peak through Fluctuation

Formula
"C"_{""max""} = ("PFT"*"C"_{"av"})+"C"_{""min""}

Example
"865.3mol/L"=("41.88"*"20mol/L")+"27.7mol/L"

Calculator
LaTeX
Peak Plasma Concentration = (Peak Through Fluctuation*Average Plasma Concentration)+Lowest Plasma Concentration
Peak through Fluctuation

## Peak through Fluctuation

Formula
"PFT" = ("C"_{""max""}-"C"_{""min""})/"C"_{"av"}

Example
"1.66"=("60.9mol/L"-"27.7mol/L")/"20mol/L"

Calculator
LaTeX
Peak Through Fluctuation = (Peak Plasma Concentration-Lowest Plasma Concentration)/Average Plasma Concentration
Average Concentration of Plasma at Steady State

## Average Concentration of Plasma at Steady State

Formula
"c̅p"_{"ss"} = "D"/("CL"*"Τ")

Example
"0.378788mol/L"="8mol"/("0.48L/s"*"44s")

Calculator
LaTeX
Average Concentration of Plasma at Steady State = Dose/(Volume of Plasma Cleared*Dosing Interval)
Initial Concentration for Intravenous Bolus

## Initial Concentration for Intravenous Bolus

Formula
"C"_{"0"} = "D"/"V"_{"d"}

Example
"0.888889mol/L"="8mol"/"9L"

Calculator
LaTeX
Initial Plasma Concentration = Dose/Volume of Distribution
Plasma Concentration of Constant Rate Infusion at Steady State

## Plasma Concentration of Constant Rate Infusion at Steady State

Formula
"C"_{"p"} = "k"_{"in"}/"CL"_{"r"}

Example
"211538.5mol/L"="55mol/s"/"15.6mL/"min""

Calculator
LaTeX
Plasma Concentration = Rate of Infusion/Renal Clearance

## Fractional Excretion of Sodium Formula

Fractional Excretion of Sodium = (Urine Sodium Concentration*Creatinine Concentration in Plasma)/(Sodium Concentration in Plasma*Creatinine Concentration in Urine)*100
FENa = (Sodiumurinary*Creatinineplasma)/(Sodiumplasma*Creatinineurinary)*100

## What is Pharmacokinetics?

Pharmacokinetics is currently defined as the study of the time course of drug absorption, distribution, metabolism, and excretion. Clinical pharmacokinetics is the application of pharmacokinetic principles to the safe and effective therapeutic management of drugs in an individual patient.

## How to Calculate Fractional Excretion of Sodium?

Fractional Excretion of Sodium calculator uses Fractional Excretion of Sodium = (Urine Sodium Concentration*Creatinine Concentration in Plasma)/(Sodium Concentration in Plasma*Creatinine Concentration in Urine)*100 to calculate the Fractional Excretion of Sodium, The Fractional Excretion of Sodium formula is defined as is the percentage of the sodium filtered by the kidney which is excreted in the urine. Fractional Excretion of Sodium is denoted by FENa symbol.

How to calculate Fractional Excretion of Sodium using this online calculator? To use this online calculator for Fractional Excretion of Sodium, enter Urine Sodium Concentration (Sodiumurinary), Creatinine Concentration in Plasma (Creatinineplasma), Sodium Concentration in Plasma (Sodiumplasma) & Creatinine Concentration in Urine (Creatinineurinary) and hit the calculate button. Here is how the Fractional Excretion of Sodium calculation can be explained with given input values -> 0.263238 = (10.365*12000)/(3500*13500)*100.

### FAQ

What is Fractional Excretion of Sodium?
The Fractional Excretion of Sodium formula is defined as is the percentage of the sodium filtered by the kidney which is excreted in the urine and is represented as FENa = (Sodiumurinary*Creatinineplasma)/(Sodiumplasma*Creatinineurinary)*100 or Fractional Excretion of Sodium = (Urine Sodium Concentration*Creatinine Concentration in Plasma)/(Sodium Concentration in Plasma*Creatinine Concentration in Urine)*100. Urine Sodium Concentration measures the amount of sodium in a certain amount of urine, Creatinine Concentration in Plasma is a measurement of creatinine in blood plasma, Sodium Concentration in Plasma is the concentration of sodium present in blood plasma & Creatinine Concentration in Urine is measures of the amount of creatinine in a certain amount of urine.
How to calculate Fractional Excretion of Sodium?
The Fractional Excretion of Sodium formula is defined as is the percentage of the sodium filtered by the kidney which is excreted in the urine is calculated using Fractional Excretion of Sodium = (Urine Sodium Concentration*Creatinine Concentration in Plasma)/(Sodium Concentration in Plasma*Creatinine Concentration in Urine)*100. To calculate Fractional Excretion of Sodium, you need Urine Sodium Concentration (Sodiumurinary), Creatinine Concentration in Plasma (Creatinineplasma), Sodium Concentration in Plasma (Sodiumplasma) & Creatinine Concentration in Urine (Creatinineurinary). With our tool, you need to enter the respective value for Urine Sodium Concentration, Creatinine Concentration in Plasma, Sodium Concentration in Plasma & Creatinine Concentration in Urine and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well. Let Others Know