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Part Description

LP207910-3   free DRUG/TOX
The measurement of free (unbound) drug concentrations in plasma is important for certain drugs and has two advantages over measurement of total concentration: (1) the free concentration is independent of changes in plasma binding (e.g., due to changes in albumin), and (2) the free concentration is more directly related to both the efficacy and toxicity of the drug PMID: 6636249. For most drugs and the majority of patients, measuring the free and total concentrations is not necessary. However, for certain drugs, including some anticonvulsants and antibiotics, and specific patient populations, such as critically ill or immunosuppressed patients, the free concentration is a better indicator of therapeutic effect and potential toxicity. Source: Regenstrief LOINC

LOINC Names Get Info

Fully-Specified Name
PHENobarbital.free:MCnc:Pt:Ser/Plas:Qn:
Long Common Name
PHENobarbital Free [Mass/volume] in Serum or Plasma
Short Name
PHENobarb Free SerPl-mCnc
Display Name
PHENobarbital Free [Mass/Vol]
Consumer Name Alpha Get Info
Free PHENobarbital, Blood

Part Model Get Info

  • Component
    PHENobarbital.free
    LP29096-2
    • Analyte
      PHENobarbital.free
      LP29096-2
      • Component Numerator
        PHENobarbital.free
        LP29096-2
        • Component Numerator Core
          PHENobarbital.free
          LP29096-2
        • Component Numerator Core Suffix
          NULL
           
      • Component Denominator
        NULL
         
        • Component Denominator Core
          NULL
           
        • Component Denominator Core Suffix
          NULL
           
    • Challenge
      NULL
       
    • Adjustment
      NULL
       
    • Count
      NULL
       
  • Property
    MCnc
    LP6827-2
  • Time
    Pt
    LP6960-1
  • System
    Ser/Plas
    LP7576-4
    • System Core
      Ser/Plas
      LP7576-4
    • Super System
      NULL
       
  • Scale
    Qn
    LP7753-9
  • Method
    NULL
     

Basic Attributes

Class
DRUG/TOX
Type
Laboratory
First Released
Version 1.0
Last Updated
Version 2.73 (MIN)
Order vs. Observation
Both
Common Test Rank Get Info
13041

Member of these Panels

LOINCLong Common Name
54037-7HEDIS 2009 panel
57820-3HEDIS 2010 panel
60442-1HEDIS 2011 panel
67767-4HEDIS 2012 panel
72199-3HEDIS 2013 panel
74234-6HEDIS 2014 Value Sets

Language Variants Get Info

TagLanguageTranslation
cs-CZCzech (Czechia)Fenobarbital volný:Hmotnostní koncentrace:Časový bod:Sérum/plazma:Kvantitativní:
el-GRGreek (Greece)Φαινοβαρβιτάλη.ελεύθερη:MCnc:Pt:Ορός/Πλάσμα:Qn:
Synonyms: DRUG/TOX MCnc Pt Qn Ορός Ορός/Πλάσμα Πλάσμα Φαινοβαρβιτάλη Φαινοβαρβιτάλη.ελεύθερη
es-ARSpanish (Argentina)fenobarbital libre:concentración de masa:punto en el tiempo:suero/plasma:cuantitativo:
es-ESSpanish (Spain)Fenobarbital libre:Concentración de masa:Punto temporal:Suero o Plasma:Qn:
Synonyms: Cuantitativo
es-MXSpanish (Mexico)PHENobarbital.libre:Concentración de masa:Punto temporal:Suero o Plasma:Cuantitativo:
et-EEEstonian (Estonia)Fenobarbitaal.vaba:MCnc:Pt:S/P:Qn:
Synonyms: Juhuslik Kvantitatiivne Plasma Seerum Seerum või plasma
fr-FRFrench (France)Phénobarbital libre:Masse/Volume:Ponctuel:Sérum/Plasma:Numérique:
it-ITItalian (Italy)Fenobarbital.libero:MCnc:Pt:Siero/Plasma:Qn:
Synonyms: Concentrazione di Massa Fenobarbital Libero Livelli farmacologici e tossicologia Plasma Punto nel tempo (episodio) Siero Siero o Plasma
ko-KRKorean (Korea, Republic Of)유리페노바르비탈:질량농도:검사시점:혈청/혈장:정량:
nl-NLDutch (Netherlands)fenobarbital.vrij:massa/volume:moment:serum of plasma:kwantitatief:
pt-BRPortuguese (Brazil)Fenobarbital.livre:MCnc:Pt:Sor/Plas:Qn:
Synonyms: ; Phenobarb Free; Nirvonal; Luminal; Mass concentration; Level; Point in time; Random; SerPl; SerPlas; SerP; Serum; SR; Plasma; Pl; Plsm; Quantitative; QNT; Quant; Quan; Drugs; FR; Non-protein bound; DRUG/TOXICOLOGY; DRUG/TOXICOLOGY
ru-RURussian (Russian Federation)Фенобарбитал.свободный:МассКонц:ТчкВрм:Сыв/Плаз:Колич:
Synonyms: Количественный Массовая концентрация Плазма Сыворотка Сыворотка или Плазма Точка во времени;Момент
tr-TRTurkish (Turkey)Fenobarbital.serb:KütlKons:Zmlı:Ser/Plaz:Kant:
zh-CNChinese (China)苯巴比妥.游离型:质量浓度:时间点:血清/血浆:定量型:
Synonyms: C12H12N2O3;苯巴比妥米那;鲁米那;苯基巴比妥;本巴比妥 可用数量表示的;定量性;数值型;数量型;连续数值型标尺 时刻;随机;随意;瞬间 毒品 毒品类 水平;浓度;质量浓度(单位体积) 游离 游离型苯巴比妥;游离苯巴比妥;苯巴比妥.游离;苯巴比妥（苯巴比妥米那、鲁米那、苯基巴比妥、本巴比妥）.游离型 药品类 药物 药物/毒理学;药物/毒理学试验;药物毒理学试验;药物毒理学试验类 药物类 血清或血浆 非蛋白结合型 非蛋白质结合型

Example Units

UnitSource
ug/mLExample UCUM Units

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

CodeSystem lookup
https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=3951-1