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 Nimrod C, Davies D, Iwanicki S, Harder J, Persaud D, Nicholson S. Ultrasound prediction of pulmonary hypoplasia. Obstet Gynecol. 1986 Oct;68(4):495-8. Link to PubMed

Fully-Specified Name

Component
Gestational age
Property
Time
Time
Pt
System
^Fetus
Scale
Qn
Method
US+Estimated from TC.Nimrod 1986

Additional Names

Short Name
GA from TC.Nimrod86

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 Thoracic Circumference: GA (50th) = (TC + 0.44) / 0.79; Published Inputs: TC 13-35 cm

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 TC.NIMROD.86:tiempo:punto en el tiempo:^feto:cuantitativo:US.ESTIMATED FROM TC.NIMROD.86
es-MX Spanish (Mexico) Edad gestacional:Tiempo:Punto temporal:^ Feto:Cuantitativo:US+Estimated from TC.Nimrod 1986
fr-BE French (Belgium) Age gestationnel:Durée:Temps ponctuel:^Foetus:Quantitatif:US.estimé selon TC.Nimrod 1986
it-IT Italian (Italy) Età gestazionale:Tempo:Pt:^feto:Qn:Ecografia.stimata da TC.Nimrod 1986
Synonyms: Eco Ecografia ostetrica Punto nel tempo (episodio) Tempo (e.g. secondi)
pt-BR Portuguese (Brazil) Idade gestacional:Tempo:Pt:^Feto:Qn:US.estimado pela circunferência torácica.Nimrod.86
Synonyms: ; GA; Point in time; Random; Fet; Fetal; Quantitative; QNT; Quant; Quan; from TC.Nimrod86; 86; Thoracic Circumference; from TC.Nimrod86; 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+依据胸围的估计法.Nimrod.86
Synonyms: TC 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) 胎;超系统 - 胎儿 胎龄;Gestational Age;GA 胎龄估计法;孕龄估计法 超声.依据胸围的胎龄估计法.Nimrod.86;超声.依据TC的胎龄估计法.Nimrod 1986;超声.依据TC的胎龄估计法.Nimrod.86;超声.依据TC的胎龄估计法.Nimrod86;超声.依据胸围的胎龄估计法.Nimrod 1986;超声.依据胸围的胎龄估计法.Nimrod86 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 锝 锝（Technetium，Tc）

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=33135-5