Version 2.78

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

Component
Gestational age
Property
Time
Time
Pt
System
^Fetus
Scale
Qn
Method
US+Estimated from IOD.Trout 1994

Additional Names

Short Name
GA from IOD.Trout94

Basic Attributes

Class
OB.US
Type
Clinical
First Released
Version 2.09
Last Updated
Version 2.70
Order vs. Observation
Observation

Formula (Readable)

Gestational age from Inter Orbital Diameter diameter: IOD (mm) = - 4.14 + 0.94 (GA) - 0.007 (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 IOD.TROUT.94:tiempo:punto en el tiempo:^feto:cuantitativo:US.ESTIMATED FROM IOD.TROUT.94
es-MX Spanish (Mexico) Edad gestacional:Tiempo:Punto temporal:^ Feto:Cuantitativo:US+Estimated from IOD.Trout 1994
fr-BE French (Belgium) Age gestationnel:Durée:Temps ponctuel:^Foetus:Quantitatif:US.estimé selon IOD.Trout 1994
it-IT Italian (Italy) Età gestazionale:Tempo:Pt:^feto:Qn:Ecografia.stimata da IOD.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 interno.Trout.94
Synonyms: ; GA; Point in time; Random; Fet; Fetal; Quantitative; QNT; Quant; Quan; from IOD.Trout94; 94; Inter orbital diameter; Inter Ocular Distance; from IOD.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+依据眼眶内距的估计法.Trout.94
Synonyms: 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 双目距离 双目间距 双眼距离 双眼间距 双瞳距 双瞳间距 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) 目间距 眼间距 瞳孔距离 瞳孔距离（Inter Ocular Distance，IOD） 瞳孔间距 瞳距 瞳间距 胎;超系统 - 胎儿 胎龄;Gestational Age;GA 胎龄估计法;孕龄估计法 超声.依据眼眶内距的胎龄估计法.Trout.94;超声.依据IOD的胎龄估计法.Trout 1994;超声.依据IOD的胎龄估计法.Trout.94;超声.依据IOD的胎龄估计法.Trout94;超声.依据内眶距的胎龄估计法.Trout 1994;超声.依据内眶距的胎龄估计法.Trout.94;超声.依据内眶距的胎龄估计法.Trout94;超声.依据眶内距的胎龄估计法.Trout 1994;超声.依据眶内距的胎龄估计法.Trout.94;超声.依据眶内距的胎龄估计法.Trout94;超声.依据眶间距的胎龄 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

CodeSystem lookup
https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=33123-1