Version 2.77

Part Description

LP19507-0   Gestational age
The age of the conceptus, beginning from the time of fertilization. In clinical obstetrics, the gestational age is often estimated as the time from the last day of the last menstruation which is about 2 weeks before ovulation and fertilization. Source: National Library of Medicine, MeSH 2006

Reference Information

Type Source Reference
Article NCBI PubMed Trout T, Budorick NE, Pretorius DH, McGahan JP. Significance of orbital measurements in the fetus. J Ultrasound Med. 1994 Dec;13(12):937-43. Link to PubMed

Fully-Specified Name

Gestational age
US+Estimated from OOD.Trout 1994

Additional Names

Short Name
GA from OOD.Trout94

Basic Attributes

First Released
Version 2.09
Last Updated
Version 2.70
Order vs. Observation

Formula (Readable)

Gestational age from Outer Orbital Diameter:.OOD (mm) = - 22.17 + 3.36 (GA) - 0.03 (GA2) GA is in weeks

Member of these Groups Get Info

LOINC Group Group Name
LG50112-8 Gestational ageTime^Fetus

Language Variants Get Info

Tag Language Translation
es-AR Spanish (Argentina) US.ESTIMATED FROM OOD.TROUT.94:tiempo:punto en el tiempo:^feto:cuantitativo:US.ESTIMATED FROM OOD.TROUT.94
es-MX Spanish (Mexico) Edad gestacional:Tiempo:Punto temporal:^ Feto:Cuantitativo:US+Estimated from OOD.Trout 1994
fr-BE French (Belgium) Age gestationnel:Durée:Temps ponctuel:^Foetus:Quantitatif:US.estimé selon OOD.Trout 1994
it-IT Italian (Italy) Età gestazionale:Tempo:Pt:^feto:Qn:Ecografia.stimata da OOD.Trout 1994
Synonyms: Eco Ecografia ostetrica Punto nel tempo (episodio) Tempo (e.g. secondi)
pt-BR Portuguese (Brazil) Idade gestacional:Tempo:Pt:^Feto:Qn:US.estimado pelo diâmetro interorbital externo.Trout.94
Synonyms: ; GA; Point in time; Random; Fet; Fetal; Quantitative; QNT; Quant; Quan; from OOD.Trout94; 94; Outer orbital diameter; from OOD.Trout94; US.est; predicted; Ultrasound; ULS; Sonogram; Sonography; Sonograph; Echography; Est; estimation; Gest; Gestation; Prenatal; OBSTERICAL.ULTRASOUND; OBSTERICAL.ULTRASOUND; Obstetrical; Obstetrics
zh-CN Chinese (China) 孕龄:时间:时间点:^胎儿:定量型:超声+依据眼眶外距的估计法.Trout.94
Synonyms: OOD 产科 产科.超声;产科.超声.印象与测量指标;产科学.超声;产科学.超声.印象与测量指标;产科学检查与测量指标.超声.印象与测量指标;产科学超声印象与测量指标 产科学 受孕 受孕期 受孕期的 受孕的 可用数量表示的;定量性;数值型;数量型;连续数值型标尺 妊娠 妊娠期的 妊娠的 怀卵 怀卵期 怀卵期的 怀卵的 怀孕 怀孕期 怀孕期的 怀孕的 时刻;随机;随意;瞬间 时间(如秒);时间(如秒数) 眼眶外侧直径 眼眶外径(Outer Orbital Diameter,OOD) 胎;超系统 - 胎儿 胎龄;Gestational Age;GA 胎龄估计法;孕龄估计法 超声.依据眼眶外距的胎龄估计法.Trout.94;超声.依据OOD的胎龄估计法.Trout 1994;超声.依据OOD的胎龄估计法.Trout.94;超声.依据OOD的胎龄估计法.Trout94;超声.依据外眶距的胎龄估计法.Trout 1994;超声.依据外眶距的胎龄估计法.Trout.94;超声.依据外眶距的胎龄估计法.Trout94;超声.依据眼眶外距的胎龄估计法.Trout 1994;超声.依据眼眶外距的胎龄估计法.Trout94 超声.胎龄估计法 超声检查方法;超声检查法;超声波;超声波检查方法;超声波检查法

Example Units

Unit Source
d Example UCUM Units

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

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