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 29954-5: Extractable nuclear Ab IA Qn (S)

Name: LOINC Code 29954-5: Extractable nuclear Ab IA Qn (S)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:15.475Z

29954-5 is a LOINC code used to identify Extractable nuclear Ab IA Qn (S) 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 Extractable nuclear Ab. It is commonly used with the system or sample type Ser.

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 Extractable nuclear Ab. It is commonly used with the system or sample type Ser.

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: IA

What it does not mean

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

Key facts

Extractable nuclear Ab [Units/volume] in Serum by Immunoassay
Extractable nuclear Ab
ABS; Aby; ANA; ANF; Antby; Anti; Antibodies; Antibody; Antinuclear antibody; Arbitrary concentration; Autoantibodies; Autoantibody; EIA; ELFA; ELISA; ENA; Enzyme immunoassay; IAA; MEIA; NA; Nuc; Point in time; QNT; Quan; Quant; Quantitative; Random; Serology; Serum; SR; SUDS

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

Extractable nuclear Ab IA Qn (S)Extractable nuclear Ab [Units/volume] in Serum by ImmunoassayENA Ab Ser IA-aCncExtractable nuclear AbSEROExtractable nuclear antibody, BloodACnc

Frequently asked questions

Code details

Code29954-5

SystemLOINC

Display nameExtractable nuclear Ab IA Qn (S)

DescriptionExtractable nuclear Ab

Short nameENA Ab Ser IA-aCnc

ComponentExtractable nuclear Ab

PropertyACnc

TimingPt

System (specimen)Ser

ScaleQn

MethodIA

ClassSERO

Example unitsarb U/mL

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.04

Last changed2.68

Consumer names

Extractable nuclear antibody, Blood

Part names

Extractable nuclear AbACncPtSerQnIAArbitrary ConcentrationPoint in time (spot)SerumImmunoassay

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.