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 104428-8: MeV IgG avidity IA (S) [Ratio]

Name: LOINC Code 104428-8: MeV IgG avidity IA (S) [Ratio]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:18.505Z

104428-8 is a LOINC code used to identify MeV IgG avidity IA (S) [Ratio] 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 Measles virus Ab.IgG avidity. 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 Measles virus Ab.IgG avidity. 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

Measles virus IgG Ab avidity [Ratio] in Serum by Immunoassay
Measles virus Ab.IgG avidity
ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; EIA; ELFA; ELISA; Enzyme immunoassay; IAA; Immune globulin G; Immunoglobulin G; MEIA; MeV; MeV IgG avidity; Microbiology; Msls; Point in time; Random; Ratios; Rto; Rubeola; Serum; SmQn; 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

MeV IgG avidity IA (S) [Ratio]Measles virus IgG Ab avidity [Ratio] in Serum by ImmunoassayMeV IgG Avidity Ser IA-RtoMeasles virus Ab.IgG avidityMICROMeasles virus IgG avidity, BloodRatio

Frequently asked questions

Code details

Code104428-8

SystemLOINC

Display nameMeV IgG avidity IA (S) [Ratio]

DescriptionMeasles virus Ab.IgG avidity

Short nameMeV IgG Avidity Ser IA-Rto

ComponentMeasles virus Ab.IgG avidity

PropertyRatio

TimingPt

System (specimen)Ser

ScaleSemiQn

MethodIA

ClassMICRO

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.77

Last changed2.77

Consumer names

Measles virus IgG avidity, Blood

Part names

Measles virus Ab.IgG avidityRatioPtSerSemiQnIAPoint 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.