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Term Description

The fractional excretion of sodium is calculated as follows, where the asterisk is being used to indicate multiplication: 100 * (urine Na * plasma creatinine)/(plasma Na * urine creatinine). Fractional excretion of sodium is used to try to distinguish pre-renal azotemia (FE Na <1% ) from m actute tubular necrosis (FE Na > 1%) and post renal azotemia (FE Na > 4%).

Part Description

LP64200-6   Fractional excretion of sodium
The fractional excretion of sodium (FENa) is a measure of the percentage of sodium excreted in the urine versus the sodium reabsorbed by the kidney. It is measured in terms of plasma and urine sodium, rather than by the interpretation of urinary sodium concentration alone, as urinary sodium concentrations can vary with water resorption. Therefore the urinary and plasma concentrations of sodium must be compared to get an accurate picture of renal clearance. In clinical use, the fractional excretion of sodium can be calculated as part of the evaluation of acute renal failure. Copyright Text is available under the Creative Commons Attribution/Share-Alike License. See http://creativecommons.org/licenses/by-sa/3.0/ for details. Source: Wikipedia, Wikepedia

LOINC Names Get Info

Fully-Specified Name
Fractional excretion of sodium:Ratio:Pt:Urine+Ser/Plas:Qn:
Long Common Name
Fractional excretion of sodium [Ratio] in Urine and Serum or Plasma
Short Name
Fract excret Na Ur+SerPl-Rto
Display Name
Fractional excretion of sodium (U+S/P) [Ratio]
Consumer Name Alpha Get Info
Fractional excretion of sodium, Urine+Blood

Part Model Get Info

  • Component
    Fractional excretion of sodium
    LP64200-6
    • Analyte
      Fractional excretion of sodium
      LP64200-6
      • Component Numerator
        Fractional excretion of sodium
        LP64200-6
        • Component Numerator Core
          Fractional excretion of sodium
          LP64200-6
        • Component Numerator Core Suffix
          NULL
           
      • Component Denominator
        NULL
         
        • Component Denominator Core
          NULL
           
        • Component Denominator Core Suffix
          NULL
           
    • Challenge
      NULL
       
    • Adjustment
      NULL
       
    • Count
      NULL
       
  • Property
    Ratio
    LP6852-0
  • Time
    Pt
    LP6960-1
  • System
    Urine+Ser/Plas
    LP32517-2
    • System Core
      Urine+Ser/Plas
      LP32517-2
    • Super System
      NULL
       
  • Scale
    Qn
    LP7753-9
  • Method
    NULL
     

Basic Attributes

Class
CHEM
Type
Laboratory
First Released
Version 2.21
Last Updated
Version 2.73 (MIN)
Order vs. Observation
Both
Common Test Rank Get Info
2456

Language Variants Get Info

TagLanguageTranslation
cs-CZCzech (Czechia)Frakční exkrece sodíku:Poměr:Časový bod:Moč a sérum/plazma:Kvantitativní:
de-ATGerman (Austria)Synonyms: Natriumexkr. frkt./U
de-DEGerman (Germany)Fraktionelle Natriumexkretion:Verhältnis:Zeitpunkt:Urin und Serum oder Plasma:Quantitativ:
el-GRGreek (Greece)Κλασματική απέκκριση νατρίου:Ratio:Pt:Ούρα+Ορός/Πλάσμα:Qn:
Synonyms: CHEM Pt Qn Ratio Κλασματική απέκκριση νατρίου Νάτριο Ορός Ορός/Πλάσμα Ούρα Ούρα+Ορός/Πλάσμα Πλάσμα
es-ESSpanish (Spain)Fracción de excreción de sodio:Fracción:Punto temporal:Orina y suero o plasma:Qn:
Synonyms: Cuantitativo
es-MXSpanish (Mexico)Excreción fraccionada de sodio:Proporción:Punto temporal:Orina y suero o plasma:Cuantitativo:
fr-FRFrench (France)Sodium excrétion fractionnée:Ratio:Ponctuel:Urine+Sérum/Plasma:Numérique:
it-ITItalian (Italy)Escrezione frazionata di sodio:Rapporto:Pt:Urina+Siero/Plasma:Qn:
Synonyms: Chimica Plasma Punto nel tempo (episodio) Siero Siero o Plasma Urine & Siero o Plasma
nl-NLDutch (Netherlands)fractionele natriumuitsheiding:verhouding:moment:urine en serum of plasma:kwantitatief:
pl-PLPolish (Poland)Frakcyjny klirens sodu:współczynnik:punkt w czasie:mocz i surowica lub osocze:ilościowy:
Synonyms: Frakcja sodu wydalonego z moczem;FENa
pt-BRPortuguese (Brazil)Excreção fracionada de sódio:Ratio:Pt:Urina+Sor/Plas:Qn:
Synonyms: Na; Fract excret Na; FENa; FE Na; Rto; Point in time; Random; Ur+SerPl; Ur+SerPl; UR; Urn; UA; SerPl; SerPlas; SerP; Serum; SR; Plasma; Pl; Plsm; Quantitative; QNT; Quant; Quan; Chemistry
ru-RURussian (Russian Federation)Фракционная экскреция натрия:Отношение:ТчкВрм:Моча+Сыв/Плаз:Колич:
Synonyms: Количественный Коэффициент;Соотношение;Пропорция Моча и Сыворотка или Плазма Плазма Сыворотка Сыворотка или Плазма Точка во времени;Момент
tr-TRTurkish (Turkey)Fraksiyonel atılım, sodyumun:Oran:Zmlı:İdrar+Ser/Plaz:Kant:
zh-CNChinese (China)钠排泄分数:比率:时间点:尿液+血清/血浆:定量型:
Synonyms: FE Na;FEH20;FENa;滤出钠排泄率;钠排出分数;钠排泄分数;Fractional excretion of sodium;钠排泄比值;钠水排出分数 Na;Na+;钠离子 化学;化学检验项目;化学检验项目类;化学类;化学试验;非刺激耐受型化学检验项目;非刺激耐受型化学检验项目类;非刺激耐受型化学试验;非刺激耐受型化学试验类 可用数量表示的;定量性;数值型;数量型;连续数值型标尺 尿 & 血清或血浆;尿+血清/血浆;尿与血清或血浆;尿液 & 血清或血浆;尿液与血清或血浆 尿;小便;下泉 时刻;随机;随意;瞬间 来自于不同体系的两个观察指标之比;比;比值 血清或血浆

Example Units

UnitSource
%Example UCUM Units
%REGENSTRIEF

LOINC Terminology Service (API) using HL7® FHIR® Get Info

CodeSystem lookup
https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=49135-7