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 17589-3: Smith extractable nuclear Ab Immune diff (S) [Titer]

Name: LOINC Code 17589-3: Smith extractable nuclear Ab Immune diff (S) [Titer]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:26.982Z

17589-3 is a LOINC code used to identify Smith extractable nuclear Ab Immune diff (S) [Titer] 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 Smith 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 Smith 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

Smith extractable nuclear Ab [Titer] in Serum by Immune diffusion (ID)
Smith extractable nuclear Ab
ABS; Aby; ANA; ANF; Antby; Anti; Antibodies; Antibody; Antinuclear antibody; Autoantibodies; Autoantibody; Dilution factor; Dilution Factor (Titer); ENA; ENA SM; ID; Imm; Immunodiff; Immunodiffusion; Imun; Imune; NA; Nuc; Point in time; Random; Serology; Serum; SM; SmQn; SR; Titer; Titered; Titre; Ttr

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

Smith extractable nuclear Ab Immune diff (S) [Titer]Smith extractable nuclear Ab [Titer] in Serum by Immune diffusion (ID)ENA SM Ab Titr Ser IDSmith extractable nuclear AbSEROSmith extractable nuclear antibody, BloodTitr

Frequently asked questions

Code details

Code17589-3

SystemLOINC

Display nameSmith extractable nuclear Ab Immune diff (S) [Titer]

DescriptionSmith extractable nuclear Ab

Short nameENA SM Ab Titr Ser ID

ComponentSmith extractable nuclear Ab

PropertyTitr

TimingPt

System (specimen)Ser

ScaleSemiQn

MethodImmune diffusion

ClassSERO

Example unitstiter

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0l

Last changed2.75

Consumer names

Smith extractable nuclear antibody, Blood

Part names

Smith extractable nuclear AbTitrPtSerSemiQnImmune diffusionTiterPoint 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.