Version 2.78

Part Descriptions

LP14741-0   Citrate
A citrate is an ionic form of citric acid, such as C3 H5 O(COO)3 3ˆ', that is, citric acid minus three hydrogen ions. Citrates are compounds containing this group, either ionic compounds, the salts, or analogous covalent compounds, esters. An example of a salt is sodium citrate and an ester is trimethyl citrate. Because citric acid is a multifunctional acid, several intermediate ions exist: hydrogen citrate ion, HC6 H5 O7 2ˆ' and dihydrogen citrate ion, H2 C6 H5 O7 ˆ'. These may form salts as well, called acid salts. Salts of the hydrogen citrate ions are weakly acidic, whereas salts of the citrate ion itself (with an inert cation such as sodium ion) are weakly basic. 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, Citrate (Wikipedia)

LP14741-0   Citrate
Citrate testing is used to diagnose renal tubular acidosis and evaluate kidney stone disease. Acid-base balance plays a critical role in citrate excretion. In acidosis, increased citrate utilization occurs and causes reduced citrate excretion. In alkalosis, citrate excretion increases. Hypocitruria promotes the formation of calcium kidney stones because citrate normally binds urinary calcium as a soluble calcium citrate salt. Hypocitruria may also have a role in uric acid stone formation. Citrate excretion is impaired by acidosis, hypokalemia, urinary tract infection, and a high animal protein/high acid-ash content diet. Urine citrate levels may also be decreased with severe muscular activity, hypoparathyroidism, diabetes, and chronic renal failure. Urine citrate levels may be increased with high carbohydrate diet, estrogen therapy, and Vitamin D use. Information from emedicine, "Hypocitraturia," by George Bennett Stackhouse IV, MD, and Medline Plus, accessed 2006 10 25 Source: Regenstrief Institute

LP32035-5   Creatinine
Creatinine or creatine anhydride, is a breakdown product of creatine phosphate in muscle. The loss of water molecule from creatine results in the formation of creatinine. It is transferred to the kidneys by blood plasma, whereupon it is eliminated by glomular filtration and partial tubular excretion. Creatinine is usually produced at a fairly constant rate and measuring its serum level is a simple test. A rise in blood creatinine levels is observed only with marked damage to functioning nephrons; therefore this test is not suitable for detecting early kidney disease. Creatine and creatinine are metabolized in the kidneys, muscle, liver and pancreas. Copyright Copyright ©2005-2009 Genome Alberta (Reference to original publication: Wishart DS, Knox C, Guo AC, et al. HMDB: a knowledgebase for the human metabolome. Nucleic Acids Res. 2009 37(Database issue):D603-610.) Source: Human Metabolome Database, Creatinine

Fully-Specified Name

Component
Citrate/Creatinine
Property
SRto
Time
Pt
System
Urine
Scale
Qn
Method

Additional Names

Short Name
Citrate/Creat Ur-sRto
Display Name
Citrate/Creatinine (U) [Molar ratio]
Consumer Name Alpha Get Info
Citrate/Creatinine, Urine

Basic Attributes

Class
CHEM
Type
Laboratory
First Released
Version 2.03
Last Updated
Version 2.73
Order vs. Observation
Both
Common Test Rank Get Info
9221

Member of these Panels

LOINC Long Common Name
48797-5 Organic acids panel - Urine

Language Variants Get Info

Tag Language Translation
de-AT German (Austria) Synonyms: Citrat/Kreatinin-Ratio /U
de-DE German (Germany) Citrat/Creatinin:Stoffmengenverhältnis:Zeitpunkt:Urin:Quantitativ:
es-AR Spanish (Argentina) citrato/creatinina:relación de concentración de la sustancia:punto en el tiempo:orina:cuantitativo:
es-ES Spanish (Spain) Citrato/Creatinina:Relacion de Sustancia:Punto temporal:Orina:Qn:
Synonyms: Cuantitativo
es-MX Spanish (Mexico) Citrato / Creatinina:Proporción de sustancia:Punto temporal:Orina:Cuantitativo:
fr-CA French (Canada) Citrate/Créatinine:Ratio de substance:Temps ponctuel:Urine:Quantitatif:
fr-FR French (France) Citrate/créatinine:Moles ratio:Ponctuel:Urine:Numérique:
fr-BE French (Belgium) Citrate/Créatinine:Ratio de substance:Temps ponctuel:Urine:Quantitatif:
it-IT Italian (Italy) Citrato/Creatinina:Srto:Pt:Urine:Qn:
Synonyms: Chimica Punto nel tempo (episodio) Rapporto di sostanza
ko-KR Korean (Korea, Republic Of) 구연산/크레아티닌:물질구성비:검사시점:뇨:정량:
nl-NL Dutch (Netherlands) citraat/creatinine:molaire verhouding:moment:urine:kwantitatief:
Synonyms: kreatinine
pt-BR Portuguese (Brazil) Citrato/Creatinina:SCrto:Pt:Urina:Qn:
Synonyms: Citric acid; Creat; CR; sRto; Substance concentration ratio; Point in time; Random; Ur; UR; Urn; UA; Quantitative; QNT; Quant; Quan; Chemistry; UCr
ru-RU Russian (Russian Federation) Цитрат/Креатинин:МольОтн:ТчкВрм:Моча:Колич:
Synonyms: Количественный Мольная доля;Молярная доля;Отношение концентраций Точка во времени;Момент
tr-TR Turkish (Turkey) Sitrat/Kreatinin:SOrn:Zmlı:İdrar:Kant:
Synonyms: SubsOranı
zh-CN Chinese (China) 柠檬酸/肌酐:物质的量比率:时间点:尿液:定量型:
Synonyms: CR;Creat;肌氨酸酐;肌酸内酰胺;肌酸酐 UCr 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;小便;下泉 尿液肌酐 尿液肌酸酐 尿肌酸酐 时刻;随机;随意;瞬间 枸橼酸;枸橼酸根;枸橼酸盐;枸橼酸酯;柠檬酸根;柠檬酸盐;柠檬酸酯 物质的量比值;物质的量比;摩尔比;摩尔比率;摩尔比值 肌酸内酰胺

Example Units

Unit Source
mmol/mol eCHN
mmol/mol cr REGENSTRIEF
mmol/mol{creat} Example UCUM Units

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

CodeSystem lookup
https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=29527-9