Version 2.76

Part Descriptions

LP14752-7   pH
pH is a measure of the acidity or basicity of a solution. It is defined as the cologarithm of dissolved hydrogen ions (H+). Hydrogen ion activity coefficients cannot be measured experimentally, so they are based on theoretical calculations. The pH scale is not an absolute one, it is relative to a set of internationally established standard solutions. pH 7.0 is considered neutral. Copyright Text is available under the Creative Commons Attribution/Share-Alike License. See for details. Source: Wikipedia, pH

LP14752-7   pH
Potentia Hydrogenii, commonly known as pH, is a quantitative measurement of the acidity or basicity of a substance. A substance's pH value is based on a relative scale from 1-14 depending on the substance's proton ion concentration (H+). A higher proton ion concentration results in a lower pH value. Therefore, a pH value between 0 and 7 is an acidic substance whereas a pH value between 7 and 14 is an alkaline/basic substance. A pH value of exactly 7 is a neutral substance. [] The specific pH value of the blood is crucial in maintaining bodily functions. When the blood pH value is below normal range it is called acidosis. When the blood pH value is above normal range, it is called alkadosis. Acidosis/alkadosis can be divided into two categories: metabolic and respiratory. [] Source: Regenstrief LOINC

Fully-Specified Name


Additional Names

Short Name
pH BldV
Display Name
pH (BldV)
Consumer Name Alpha Get Info
pH, Blood

Basic Attributes

First Released
Version 1.0
Last Updated
Version 2.75
Order vs. Observation
Common Test Rank Get Info

Member of these Panels

LOINC Long Common Name
34554-6 Electrolytes 1998 and Venous pH panel - Serum or Plasma + Blood venous
24344-4 Gas and Carbon monoxide panel - Venous blood
101473-7 Gas and electrolytes panel - Venous blood
101866-2 Gas and electrolytes point of care panel - Venous blood
24339-4 Gas panel - Venous blood
75885-4 IEEE 11073 Rosetta panel

Member of these Groups Get Info

LOINC Group Group Name
LG345-5 pH|LsCnc|Pt|ANYBldSerPl

Language Variants Get Info

Tag Language Translation
de-AT German (Austria) Synonyms: pH venös
de-DE German (Germany) pH:Logarithmische Stoffmengenkonzentration:Zeitpunkt:Blut venös:Semiquantitativ:
Synonyms: pH-Wert
es-AR Spanish (Argentina) pH:concentración de sustancia:punto en el tiempo:sangre venosa:cuantitativo:
es-ES Spanish (Spain) pH:LsCnc:Punto temporal:Sangre venosa:Semicuantitativo:
Synonyms: Semicuantitativo
es-MX Spanish (Mexico) pH:Concentración logarítmica molar:Punto temporal:Sangre venosa:Cuantitativo:
fr-FR French (France) pH:Log de concentration:Ponctuel:Sang veineux:Semi-Quantitatif:
fr-CA French (Canada) pH:LsCnc:Temps ponctuel:Sang veineux:Semi-Quantitatif:
it-IT Italian (Italy) pH:LsCnc:Pt:Sangue ven:SemiQn:
Synonyms: Chimica Logaritmo della concentrazione molare Punto nel tempo (episodio) Sangue venoso
ko-KR Korean (Korea, Republic Of) pH:물질농도:검사시점:정맥혈:정량:
nl-NL Dutch (Netherlands) pH:logaritmische molaire concentratie:moment:veneus bloed:semikwantitatief:
pl-PL Polish (Poland) PH:stężenie logarytmowo-molowe:punkt w czasie:krew żylna:półilościowy:
pt-BR Portuguese (Brazil) pH:LsCnc:Pt:SgVen:Qn:
Synonyms: Log molar concentration; Point in time; Random; Blood - venous; Bld ven; Bld venous; Blood venus; Blood ven; Venous; Quantitative; QNT; Quant; Quan; Chemistry
zh-CN Chinese (China) pH:对数型物质的量浓度:时间点:静脉全血:半定量型:
Synonyms: 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 对数型克分子浓度;对数型克分子浓度(单位体积);对数型摩尔浓度;对数型摩尔浓度(单位体积);对数型物质的量浓度(单位体积) 时刻;随机;随意;瞬间 氢指数;氢离子指数;氢离子浓度;氢离子浓度倒数的对数;酸度;酸碱值;酸碱度 静脉血

Example Units

Unit Source
[pH] Example UCUM Units

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

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