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 26703-9: Smith extractable nuclear Ab+Ribonucleoprotein extractable nuclear IgG IA (S) [Titer]

Name: LOINC Code 26703-9: Smith extractable nuclear Ab+Ribonucleoprotein extractable nuclear IgG IA (S) [Titer]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:14.096Z

26703-9 is a LOINC code used to identify Smith extractable nuclear Ab+Ribonucleoprotein extractable nuclear IgG IA (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+Ribonucleoprotein extractable nuclear Ab.IgG. 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+Ribonucleoprotein extractable nuclear Ab.IgG. 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

Smith extractable nuclear Ab+Ribonucleoprotein extractable nuclear IgG Ab [Titer] in Serum by Immunoassay
Smith extractable nuclear Ab+Ribonucleoprotein extractable nuclear Ab.IgG
ABS; Aby; ANA; ANA IgG; ANF; Antby; Anti; Antibodies; Antibody; Antinuclear antibody; Autoantibodies; Autoantibody; Dilution factor; Dilution Factor (Titer); EIA; ELFA; ELISA; ENA; ENA RNP; ENA SM; ENA SM+RNP; Enzyme immunoassay; IAA; Immune globulin G; Immunoglobulin G; MEIA; NA; Nuc; Point in time; Random; Ribonuclear protein; RNP; Ro; Serology; Serum; SM; SmQn; SR; SUDS; 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+Ribonucleoprotein extractable nuclear IgG IA (S) [Titer]Smith extractable nuclear Ab+Ribonucleoprotein extractable nuclear IgG Ab [Titer] in Serum by ImmunoassayENA SM+RNP IgG Titr Ser IASmith extractable nuclear Ab+Ribonucleoprotein extractable nuclear Ab.IgGSEROSmith extractable nuclear Ab+Ribonucleoprotein extractable nuclear IgG antibody, BloodTitr

Frequently asked questions

Code details

Code26703-9

SystemLOINC

Display nameSmith extractable nuclear Ab+Ribonucleoprotein extractable nuclear IgG IA (S) [Titer]

DescriptionSmith extractable nuclear Ab+Ribonucleoprotein extractable nuclear Ab.IgG

Short nameENA SM+RNP IgG Titr Ser IA

ComponentSmith extractable nuclear Ab+Ribonucleoprotein extractable nuclear Ab.IgG

PropertyTitr

TimingPt

System (specimen)Ser

ScaleSemiQn

MethodIA

ClassSERO

Example unitstiter

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.00

Last changed2.75

Consumer names

Smith extractable nuclear Ab+Ribonucleoprotein extractable nuclear IgG antibody, Blood

Part names

Smith extractable nuclear Ab+Ribonucleoprotein extractable nuclear Ab.IgGTitrPtSerSemiQnIASmith extractable nuclear Ab+Ribonucleoprotein extractable nuclear IgGTiterPoint 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.