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.

LOINCActiveObservation

LOINC Code 44004-0: E3.unconjugated (Amn fld) [MoM]

Name: LOINC Code 44004-0: E3.unconjugated (Amn fld) [MoM]
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

44004-0 is a LOINC code used to identify E3.unconjugated (Amn fld) [MoM] 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 Estriol.unconjugated. It is commonly used with the system or sample type Amnio fld.

Reviewed by HealthAssure Clinical TeamUpdated 25 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 Estriol.unconjugated. It is commonly used with the system or sample type Amnio fld.

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: Observation

What it does not mean

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

Key facts

Estriol (E3).unconjugated [Multiple of the median] in Amniotic fluid
Estriol.unconjugated
AF; Amn; Amn fl; Amnio; Amniotic flu; Amniotic fluid; Chemistry; E3; Estriol free; MoM; Multiple of the median; Point in time; QNT; Quan; Quant; Quantitative; Random; u Estriol; uE3; Uncnj; Unconj; Unconjug; Unconjugat

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.

Related SNOMED CT concepts

705114005SNOMED CT mapping for E3.unconjugated (Amn fld) [MoM] (44004-0)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

E3.unconjugated (Amn fld) [MoM]Estriol (E3).unconjugated [Multiple of the median] in Amniotic fluidu Estriol MoM AmnEstriol.unconjugatedCHEMUnconjugated estriol, Amniotic fluidMoM

Frequently asked questions

Code details

Code44004-0

SystemLOINC

Display nameE3.unconjugated (Amn fld) [MoM]

DescriptionEstriol.unconjugated

Short nameu Estriol MoM Amn

ComponentEstriol.unconjugated

PropertyMoM

TimingPt

System (specimen)Amnio fld

ScaleQn

ClassCHEM

Example unitsM.o.M

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.17

Last changed2.73

Consumer names

Unconjugated estriol, Amniotic fluid

Part names

Estriol.unconjugatedMoMPtAmnio fldQnMultiple of the medianPoint in time (spot)Amniotic fluid

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.