Version 2.77

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

Fully-Specified Name


Additional Names

Short Name
Chlorine Free Wat-mCnc
Display Name (Water) [Mass/Vol]
Consumer Name Alpha Get Info
Free chlorine, Water

Basic Attributes

First Released
Version 2.16
Last Updated
Version 2.34
Order vs. Observation

Member of these Panels

LOINC Long Common Name
51410-9 Environmental stressors panel - Water

Language Variants Get Info

Tag Language Translation
es-ES Spanish (Spain) Cloro. Libre:Concentración de masa:Punto temporal:Agua:Qn:
Synonyms: Cuantitativo
es-MX Spanish (Mexico) Libre de cloro:Concentración de masa:Punto temporal:Agua:Cuantitativo:
fr-CA French (Canada) Chlore.libre:Concentration de masse:Temps ponctuel:Eau:Quantitatif:
fr-FR French (France) Chlore libre:Masse/Volume:Ponctuel:Eau:Numérique:
fr-BE French (Belgium) Chlore.libre:Concentration de masse:Temps ponctuel:Eau:Quantitatif:
Synonyms: Cl-
it-IT Italian (Italy) Cloro.libero:MCnc:Pt:Acqua:Qn:
Synonyms: Concentrazione di Massa Livelli farmacologici e tossicologia Punto nel tempo (episodio)
ko-KR Korean (Korea, Republic Of) 유리염소:질량농도:검사시점:수분:정량:
nl-NL Dutch (Netherlands) chloor.vrij:massa/volume:moment:water:kwantitatief:
pl-PL Polish (Poland) Chlor wolny:stężenie masowe:punkt w czasie:woda:ilościowy:
pt-BR Portuguese (Brazil) Cloro.livre:MCnc:Pt:Agua:Qn:
Synonyms: Cl2; Mass concentration; Level; Point in time; Random; Wat; Quantitative; QNT; Quant; Quan; Drugs; FR; Non-protein bound; DRUG/TOXICOLOGY; DRUG/TOXICOLOGY
ru-RU Russian (Russian Federation) Хлор.свободный:МассКонц:ТчкВрм:Вода:Колич:
Synonyms: Количественный Массовая концентрация Точка во времени;Момент
tr-TR Turkish (Turkey) Klor.serb:KütlKons:Zmlı:Su:Kant:
zh-CN Chinese (China) 氯.游离型:质量浓度:时间点:水:定量型:
Synonyms: Cl2;氯气 H2O 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 氯.游离;氯气;游离型氯;游离氯 水平;浓度;质量浓度(单位体积) 游离 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 非蛋白结合型 非蛋白质结合型

Example Units

Unit Source
mg/L Example UCUM Units

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

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