Version 2.77

Reference Information

Type Source Reference
Article NCBI PubMed Hadlock FP, Harrist RB, Martinez-Poyer J. In utero analysis of fetal growth: a sonographic weight standard. Radiology. 1991 Oct;181(1):129-33. Link to PubMed

Fully-Specified Name

Component
Body weight
Property
Mass
Time
Pt
System
^Fetus
Scale
Qn
Method
US+Estimated from Hadlock 1991

Additional Names

Short Name
EFW from Hadlock 1991

Basic Attributes

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

Formula (Readable)

Estimated Fetal Weight from gestational age: Ln (FW) (grams) = 0.578 + 0.332 MA - 0.00354 (MA2)SD = 12.7%Range: 10 -40 weeks

Member of these Groups Get Info

LOINC Group Group Name
LG50068-2 Body weight|Mass|^Fetus|ANYMethod

Language Variants Get Info

Tag Language Translation
es-AR Spanish (Argentina) US.ESTIMATED FROM HADLOCK.91:masa:punto en el tiempo:^feto:cuantitativo:US.ESTIMATED FROM HADLOCK.91
es-MX Spanish (Mexico) Peso corporal:Masa:Punto temporal:^ Feto:Cuantitativo:US+Estimated from Hadlock 1991
it-IT Italian (Italy) Peso corporeo:Massa:Pt:^feto:Qn:Ecografia.stimata da Hadlock 1991
Synonyms: Eco Ecografia ostetrica Punto nel tempo (episodio)
pt-BR Portuguese (Brazil) Peso fetal:Massa:Pt:^Feto:Qn:US.estimado pela tAcela Hadlock.91
Synonyms: ; Wt; Bdy weight; Point in time; Random; Fet; Fetal; Quantitative; QNT; Quant; Quan; from GA.Hadlock91; 91; from GA.Hadlock91; US.est; predicted; Ultrasound; ULS; Sonogram; Sonography; Sonograph; Echography; Est; estimation; bod; Bodies; OBSTERICAL.ULTRASOUND; OBSTERICAL.ULTRASOUND; Obstetrical; Obstetrics; EFW; Estimated fetal weight
zh-CN Chinese (China) 体重:质量:时间点:^胎儿:定量型:超声+依据 Hadlock 1991 的估计法
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 可用数量表示的;定量性;数值型;数量型;连续数值型标尺 时刻;随机;随意;瞬间 标本重量;重 物体 胎;超系统 - 胎儿 胎龄估计法;孕龄估计法 超声.胎龄估计法 超声+依据 Hadlock 1991 的胎龄估计法 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 身体重量 重量

Example Units

Unit Source
kg 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=33162-9