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.

LOINCActiveBoth

LOINC Code 53695-3: Gestational age Estimated from prior assessment

Name: LOINC Code 53695-3: Gestational age Estimated from prior assessment
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:36.581Z

53695-3 is a LOINC code used to identify Gestational age Estimated from prior assessment 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. 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. 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: ACTIVE
Order vs observation: Both
Method: Clinical.estimated from prior assessment

What it does not mean

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

Key facts

Gestational age Estimated from prior assessment
Gestational age
Gestational age estimated from prior assessment.
Clin est; Composite GA; Est; Est from prior assess; estimation; Fetal; GA; Gest; Gestation; Gyn; Gynecology; OB; ObGyn; OBSTERICAL; OBSTERICAL.ULTRASOUND; Obstetrical; Obstetrics; Point in time; predicted; 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

Gestational age Estimated from prior assessmentGA Est from prior assessGestational ageOB.USTimePt^Fetus

Frequently asked questions

Code details

Code53695-3

SystemLOINC

Display nameGestational age Estimated from prior assessment

DescriptionGestational age

Short nameGA Est from prior assess

ComponentGestational age

PropertyTime

TimingPt

System (specimen)^Fetus

ScaleQn

MethodClinical.estimated from prior assessment

ClassOB.US

Example unitsdays

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.26

Last changed2.40

Part names

Gestational ageTimePt^FetusQnClinical.estimated from prior assessmentTime (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.