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 24235-4: M. pneumoniae IgG spec 2 Qn (S)

Name: LOINC Code 24235-4: M. pneumoniae IgG spec 2 Qn (S)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:12.418Z

24235-4 is a LOINC code used to identify M. pneumoniae IgG spec 2 Qn (S) 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 Mycoplasma pneumoniae Ab.IgG^2nd specimen. 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 Mycoplasma pneumoniae Ab.IgG^2nd specimen. 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

What it does not mean

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

Key facts

Mycoplasma pneumoniae IgG Ab [Units/volume] in Serum --2nd specimen
Mycoplasma pneumoniae Ab.IgG^2nd specimen
ABS; Aby; Antby; Anti; Antibodies; Antibody; Arbitrary concentration; Autoantibodies; Autoantibody; Convalescent; Enzootic pneumonia; ID; Immune globulin G; Immunoglobulin G; Infectious Disease; InfectiousDisease; M pneumo; M pneumonia; M pneumoniae; Microbiology; Myco; Myco pneu; Mycoplas; Mycoplasm; Mycoplasmoides pneumoniae; Mycoplasmosis; Mycoplsm; Pneu; pneum; Pneumo; Pneumon; Pneumonia; Point in time; Post immunization; QNT; Quan; Quant; Quantitative; Random; Second; Serum; sp2; Spec; 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.

Common synonyms

M. pneumoniae IgG spec 2 Qn (S)Mycoplasma pneumoniae IgG Ab [Units/volume] in Serum --2nd specimenM pneumo IgG sp2 Ser-aCncMycoplasma pneumoniae Ab.IgG^2nd specimenMICROMycoplasma pneumoniae IgG antibody specimen 2, BloodACnc

Frequently asked questions

Code details

Code24235-4

SystemLOINC

Display nameM. pneumoniae IgG spec 2 Qn (S)

DescriptionMycoplasma pneumoniae Ab.IgG^2nd specimen

Short nameM pneumo IgG sp2 Ser-aCnc

ComponentMycoplasma pneumoniae Ab.IgG^2nd specimen

PropertyACnc

TimingPt

System (specimen)Ser

ScaleQn

ClassMICRO

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0o

Last changed2.69

Consumer names

Mycoplasma pneumoniae IgG antibody specimen 2, Blood

Part names

Mycoplasma pneumoniae Ab.IgG^2nd specimenACncPtSerQnArbitrary ConcentrationPoint 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.