Version 2.77

Part Descriptions

LP14731-1   Phenytoin.free
Phenytoin-free levels detect the level of non-protein-bound phenytoin in the blood. It is used to measure therapeutic and toxic levels of the drug. Source: Regenstrief Institute

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

Fully-Specified Name

Component
Phenytoin.free
Property
SCnc
Time
Pt
System
Ser/Plas
Scale
Qn
Method

Additional Names

Short Name
Phenytoin Free SerPl-sCnc
Display Name
Phenytoin Free [Moles/Vol]
Consumer Name Alpha Get Info
Free phenytoin, Blood

Basic Attributes

Class
DRUG/TOX
Type
Laboratory
First Released
Version 2.07
Last Updated
Version 2.73
Order vs. Observation
Observation

Member of these Panels

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

Member of these Groups Get Info

LOINC Group Group Name
LG47569-5 Phenytoin.free|Pt|Ser/Plas

Language Variants Get Info

Tag Language Translation
de-DE German (Germany) Phenytoin.frei:Stoffmengenkonzentration:Zeitpunkt:Serum oder Plasma:Quantitativ:
es-AR Spanish (Argentina) fenitoína.libre:concentración de sustancia:punto en el tiempo:suero/plasma:cuantitativo:
es-ES Spanish (Spain) Fenitoína libre:Concentración de sustancia:Punto temporal:Suero o Plasma:Qn:
Synonyms: Cuantitativo
es-MX Spanish (Mexico) Phenytoin.libre:Concentración de sustancias:Punto temporal:Suero o Plasma:Cuantitativo:
et-EE Estonian (Estonia) Fenütoiin.vaba:SCnc:Pt:S/P:Qn:
Synonyms: Aine kontsentratsioon Juhuslik Kvantitatiivne Plasma Seerum Seerum või plasma
fr-CA French (Canada) Phénytoïne.libre:Concentration de substance:Temps ponctuel:Sérum/Plasma:Quantitatif:
fr-FR French (France) Diphénylhydantoïne libre:Moles/Volume:Ponctuel:Sérum/Plasma:Numérique:
fr-BE French (Belgium) Phénytoïne.libre:Concentration de substance:Temps ponctuel:Sérum/Plasma:Quantitatif:
it-IT Italian (Italy) Fenitoina.libera:SCnc:Pt:Siero/Plasma:Qn:
Synonyms: Concentrazione di Sostanza Fenitoina Libera Livelli farmacologici e tossicologia Plasma Punto nel tempo (episodio) Siero Siero o Plasma
ko-KR Korean (Korea, Republic Of) 유리페니토인:물질농도:검사시점:혈청/혈장:정량:
nl-NL Dutch (Netherlands) fenytoïne.vrij:mol/volume:moment:serum of plasma:kwantitatief:
pt-BR Portuguese (Brazil) Fenitoína.livre:SCnc:Pt:Sor/Plas:Qn:
Synonyms: Diphenylhydantoin; Dilantin; DPH; Dilj; DI-HYDAN; Epanutin; Fenantoin; Lehydan; Phenhydan; Sinergina; Zentropil; Substance 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-RU Russian (Russian Federation) Фенитоин.свободный:МолКонц:ТчкВрм:Сыв/Плаз:Колич:
Synonyms: Количественный Молярность;Молярная объёмная концентрация Плазма Сыворотка Сыворотка или Плазма Точка во времени;Момент
tr-TR Turkish (Turkey) Fenitoin.serb:SubKons:Zmlı:Ser/Plaz:Kant:
zh-CN Chinese (China) 苯妥英.游离型:物质的量浓度:时间点:血清/血浆:定量型:
Synonyms: C15H12N2O2;二苯乙内酰脲;苯妥营;二苯基乙内酰脲;二苯尿囊素 克分子浓度;克分子浓度(单位体积);摩尔浓度;摩尔浓度(单位体积);物质的量浓度(单位体积) 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 游离 游离型苯妥英;游离苯妥英;苯妥英.游离;苯妥英（二苯乙内酰脲、二苯基乙内酰脲、二苯尿囊素、苯妥营）.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

Unit Source
umol/L Example UCUM Units
umol/L eCHN

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

CodeSystem lookup
https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=32109-1