33111-6

Gestational age estimated from Head circumference derived on US by Chitty 1997 method

Active

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	Altman DG, Chitty LS. New charts for ultrasound dating of pregnancy. Ultrasound Obstet Gynecol. 1997 Sep;10(3):174-91. Link to PubMed

LOINC Names Get Info

Fully-Specified Name: Gestational age:Time:Pt:^Fetus:Qn:US+Estimated from HC derived.Chitty 1997
Long Common Name: Gestational age estimated from Head circumference derived on US by Chitty 1997 method
Short Name: GA from HC derived.Chitty 1997

Part Model Get Info

Component
Gestational age
LP19507-0
- Analyte
  Gestational age
  LP19507-0
  - Component Numerator
    Gestational age
    LP19507-0
    - Component Numerator Core
      Gestational age
      LP19507-0
    - Component Numerator Core Suffix
      NULL
  - Component Denominator
    NULL
    - Component Denominator Core
      NULL
    - Component Denominator Core Suffix
      NULL
- Challenge
  NULL
- Adjustment
  NULL
- Count
  NULL
Property
Time
LP6879-3
Time
Pt
LP6960-1
- Time Core
  Pt
  LP6960-1
- Time Modifier
  NULL
System
^Fetus
LP310004-9
- System Core
  NULL
- Super System
  Fetus
  LP6982-5
Scale
Qn
LP7753-9
Method
US+Estimated from HC derived.Chitty 1997
LP32347-4

Basic Attributes

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

Formula (Readable)

Gestational age from Head Circumference: GA = Exp (0.010611*HC-0.00003032*HC2+0.43498*10-7*HC3+0.08024); SD: ± 0.0005263*HC + 0.000014204*HC2 + 0.08024; Derived output: 12-39 weeks; Published input: 80-320 mm

Member of these Groups Get Info

LOINC Group	Group Name
LG50112-8	Gestational ageTime^Fetus

Language Variants Get Info

Tag	Language	Translation
el-GR	Greek (Greece)	Ηλικία κύησης:Time:Pt:^Έμβρυο:Qn:Υπερηχογράφημα+Εκτιμώμενο βάσει περιμέτρου κεφαλής, εξαχθέν.Chitty 1997 Synonyms: - OB.US Pt Qn Time Εκτιμώμενο Έμβρυο Εξαχθέν Ηλικία Ηλικία κύησης ΗΠΑ Υπερηχογράφημα+Εκτιμώμενο Υπερηχογράφημα+Εκτιμώμενο βάσει περιμέτρου κεφαλής Υπερηχογράφημα+Εκτιμώμενο βάσει περιμέτρου κεφαλής, εξαχθέν.Chitty 1997
es-AR	Spanish (Argentina)	US.ESTIMATED FROM HC DERIVED.CHITTY.97:tiempo:punto en el tiempo:^feto:cuantitativo:US.ESTIMATED FROM HC DERIVED.CHITTY.97
es-MX	Spanish (Mexico)	Edad gestacional:Tiempo:Punto temporal:^ Feto:Cuantitativo:US+Estimated from HC derived.Chitty 1997
fr-BE	French (Belgium)	Age gestationnel:Durée:Temps ponctuel:^Foetus:Quantitatif:US.estimé selon HC derived.Chitty 1997
it-IT	Italian (Italy)	Età gestazionale:Tempo:Pt:^feto:Qn:Ecografia.stimata da HC derivata.Chitty 1997 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 valor obtido da circunferência craniana.Chitty.97 Synonyms: ; GA; Point in time; Random; Fet; Fetal; Quantitative; QNT; Quant; Quan; 97; Head Circumference; 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+依据导出型头围的估计法.Chitty.97 Synonyms: HC 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;连续数值型标尺头围（Head Circumference，HC）妊娠妊娠期的妊娠的导出法;推导法;推论法;衍生法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.依据头围的胎龄估计法;超声.依据HC的胎龄估计法超声.依据导出型头围的胎龄估计法.Chitty.97;超声.依据导出型头围的胎龄估计法.Chitty 1997;超声.依据导出型头围的胎龄估计法.Chitty97;超声.依据推导型头围的胎龄估计法.Chitty 1997;超声.依据推导型头围的胎龄估计法.Chitty.97;超声.依据推导型头围的胎龄估计法.Chitty97;超声.依据派生型头围的胎龄估计法.Chitty 1997;超声.依据派生型头围的胎龄估计法.Chitty.97;超声.依据派生型头围的胎龄估计法.Chitty97;超声.依据衍生型头超声.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

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Copyright © Regenstrief Institute, Inc. All Rights Reserved. To the extent included herein, the LOINC table and LOINC codes are copyright © Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. See https://loinc.org/license for the full LOINC copyright and license.