LOINCActiveBoth

LOINC Code 104429-6: MeV IgM IA (S) [Ratio]

104429-6 is a LOINC code used to identify MeV IgM 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.IgM. 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.IgM. 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 IgM Ab [Ratio] in Serum by Immunoassay
  • Measles virus Ab.IgM
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; EIA; ELFA; ELISA; Enzyme immunoassay; IAA; Immune globulin M; Immunoglobulin M; MEIA; MeV; 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 IgM IA (S) [Ratio]Measles virus IgM Ab [Ratio] in Serum by ImmunoassayMeV IgM Ser IA-RtoMeasles virus Ab.IgMMICROMeasles virus IgM antibody, BloodRatio

Frequently asked questions

Code details

Code104429-6
SystemLOINC
Display nameMeV IgM IA (S) [Ratio]
DescriptionMeasles virus Ab.IgM
Short nameMeV IgM Ser IA-Rto
ComponentMeasles virus Ab.IgM
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 IgM antibody, Blood

Part names

Measles virus Ab.IgMRatioPtSerSemiQnIAMeasles virus IgMPoint 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.

LOINC Code 104429-6 | HealthAssure