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 20435-4: Unidentified extractable nuclear Ab Immune diff Ql (S)

Name: LOINC Code 20435-4: Unidentified extractable nuclear Ab Immune diff Ql (S)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:28.847Z

20435-4 is a LOINC code used to identify Unidentified extractable nuclear Ab Immune diff Ql (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 Unidentified 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 Unidentified 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: Immune diffusion

What it does not mean

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

Key facts

Unidentified extractable nuclear Ab [Presence] in Serum by Immune diffusion (ID)
Unidentified extractable nuclear Ab
ABS; Aby; ANA; ANF; Antby; Anti; Antibodies; Antibody; Antinuclear antibody; Autoantibodies; Autoantibody; ENA; ENA Unident; ID; Imm; Immunodiff; Immunodiffusion; Imun; Imune; NA; NOS AB; Nuc; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Screen; Serology; Serum; SR

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

Unidentified extractable nuclear Ab Immune diff Ql (S)Unidentified extractable nuclear Ab [Presence] in Serum by Immune diffusion (ID)ENA Unident Ab Ser Ql IDUnidentified extractable nuclear AbSEROBlood Unidentified extractable nuclear antibody Immune Diff testPrThr

Frequently asked questions

Code details

Code20435-4

SystemLOINC

Display nameUnidentified extractable nuclear Ab Immune diff Ql (S)

DescriptionUnidentified extractable nuclear Ab

Short nameENA Unident Ab Ser Ql ID

ComponentUnidentified extractable nuclear Ab

PropertyPrThr

TimingPt

System (specimen)Ser

ScaleOrd

MethodImmune diffusion

ClassSERO

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0m

Last changed2.56

Consumer names

Blood Unidentified extractable nuclear antibody Immune Diff test

Part names

Unidentified extractable nuclear AbPrThrPtSerOrdImmune diffusionPresence or ThresholdPoint in time (spot)SerumImmune diffusion (ID)

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.