What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINC

LOINC Code 56081-3: Fetal gestational age in weeks --at most recent delivery

Name: LOINC Code 56081-3: Fetal gestational age in weeks --at most recent delivery
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:37.766Z

56081-3 is a LOINC code used to identify Fetal gestational age in weeks --at most recent delivery in laboratory and clinical observation data. You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges. LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Gestational age in W^at most recent delivery. It is commonly used with the system or sample type ^Fetus.

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Gestational age in W^at most recent delivery. It is commonly used with the system or sample type ^Fetus.

When is it used?

Used in lab systems, EHRs, and clinical data exchange.
May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
Status: TRIAL

What it does not mean

The code identifies the observation or test, not the actual result.

Key facts

Fetal gestational age in weeks --at most recent delivery
Gestational age in W^at most recent delivery
Fetal; GA; GA (weeks); Gest; Gestation; Gyn; Gynecology; OB; ObGyn; Obstetrics; PhenX; Point in time; Prenatal; QNT; Quan; Quant; Quantitative; Random

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Common synonyms

Fetal gestational age in weeks --at most recent deliveryGA (weeks)--at most recent deliveryGestational age in W^at most recent deliveryPHENXTimePt^Fetus

Frequently asked questions

Code details

Code56081-3

SystemLOINC

Display nameFetal gestational age in weeks --at most recent delivery

DescriptionGestational age in W^at most recent delivery

Short nameGA (weeks)--at most recent delivery

ComponentGestational age in W^at most recent delivery

PropertyTime

TimingPt

System (specimen)^Fetus

ScaleQn

ClassPHENX

Example unitswk

StatusTRIAL

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.29

Last changed2.67

Part names

Gestational age in W^at most recent deliveryTimePt^FetusQnTime (e.g. seconds)Point in time (spot)

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from LOINC. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.