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 20458-6: Rubella virus IgG (S) [Interp]

Name: LOINC Code 20458-6: Rubella virus IgG (S) [Interp]
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

20458-6 is a LOINC code used to identify Rubella virus IgG (S) [Interp] 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 Rubella virus Ab.IgG. It is commonly used with the system or sample type Ser.

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 Rubella virus 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: Observation

What it does not mean

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

Key facts

Rubella virus IgG Ab [Interpretation] in Serum
Rubella virus Ab.IgG
ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; Congenital rubella syndrome; German measles; ID; Immune globulin G; Immunoglobulin G; Impression; Impression/interpretation of study; Impressions; Infectious Disease; InfectiousDisease; Interp; Interpretation; Microbiology; Nominal; Point in time; Random; RUBV; 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.

Related SNOMED CT concepts

705114005SNOMED CT mapping for Rubella virus IgG (S) [Interp] (20458-6)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

Rubella virus IgG (S) [Interp]Rubella virus IgG Ab [Interpretation] in SerumRUBV IgG Ser-ImpRubella virus Ab.IgGMICRORubella virus IgG antibody, BloodImp

Frequently asked questions

Code details

Code20458-6

SystemLOINC

Display nameRubella virus IgG (S) [Interp]

DescriptionRubella virus Ab.IgG

Short nameRUBV IgG Ser-Imp

ComponentRubella virus Ab.IgG

PropertyImp

TimingPt

System (specimen)Ser

ScaleNom

ClassMICRO

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0m

Last changed2.73

Consumer names

Rubella virus IgG antibody, Blood

Part names

Rubella virus Ab.IgGImpPtSerNomRubella virus IgGImpression/interpretation of studyPoint in time (spot)Serum

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.