33087-8

Gestational age estimated from Outer-Outer Biparietal diameter 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 O-O BPD.Chitty 1997
Long Common Name: Gestational age estimated from Outer-Outer Biparietal diameter on US by Chitty 1997 method
Short Name: GA from O-O BPD.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 O-O BPD.Chitty 1997
LP32364-9

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 Biparietal Diameter: GA = EXP (0.044653*BPD-0.0060089*BPD * ln (BPD) +1.961)SD: ± 0.0002577* BPD+0.03061Derived output: 12-39 weeks Published input: BPD 22-91 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 έξω-έξω αμφιβρεγματικής διαμέτρου.Chitty 1997 Synonyms: - OB.US Pt Qn Time Εκτιμώμενο Έμβρυο Ηλικία Ηλικία κύησης ΗΠΑ Υπερηχογράφημα+Εκτιμώμενο Υπερηχογράφημα+Εκτιμώμενο βάσει έξω-έξω αμφιβρεγματικής διαμέτρου.Chitty 1997
es-AR	Spanish (Argentina)	US.ESTIMATED FROM O-O BPD.CHITTY.97:tiempo:punto en el tiempo:^feto:cuantitativo:US.ESTIMATED FROM O-O BPD.CHITTY.97
es-MX	Spanish (Mexico)	Edad gestacional:Tiempo:Punto temporal:^ Feto:Cuantitativo:US+Estimated from O-O BPD.Chitty 1997
fr-BE	French (Belgium)	Age gestationnel:Durée:Temps ponctuel:^Foetus:Quantitatif:US.estimé selon O-O BPD.Chitty 1997
it-IT	Italian (Italy)	Età gestazionale:Tempo:Pt:^feto:Qn:Ecografia.stimata da O-O BPD.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 diâmetro biparietal externo/externo.Chitty.97 Synonyms: ; GA; Point in time; Random; Fet; Fetal; Quantitative; QNT; Quant; Quan; 97; BPD-OO; 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+依据由外至外的双顶径的估计法.Chitty.97 Synonyms: BPD O-O BPD 二顶径产科产科.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顶径（Biparietal Diameter，BPD）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;连续数值型标尺外外二顶径外外双顶径外至外二顶径外至外双顶径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) 由外至外的二顶径由外至外的双顶径（Outer to Outer Biparietal Diameter，O-O BPD）胎;超系统 - 胎儿胎龄;Gestational Age;GA 胎龄估计法;孕龄估计法超声.依据由外至外的双顶径的胎龄估计法.Chitty.97;超声.依据O-O BPD的胎龄估计法.Chitty 1997;超声.依据O-O BPD的胎龄估计法.Chitty.97;超声.依据O-O BPD的胎龄估计法.Chitty97;超声.依据由外至外的双顶径的胎龄估计法.Chitty 1997;超声.依据由外至外的双顶径的胎龄估计法.Chitty97 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=33087-8

LOINC Copyright

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.