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 52987-5: M. pneumoniae Ab CF Qn (S)

Name: LOINC Code 52987-5: M. pneumoniae Ab CF Qn (S)
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

52987-5 is a LOINC code used to identify M. pneumoniae Ab CF 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. 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 Mycoplasma pneumoniae Ab. 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: Comp fix

What it does not mean

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

Key facts

Mycoplasma pneumoniae Ab [Units/volume] in Serum by Complement fixation
Mycoplasma pneumoniae Ab
ABS; Aby; Antby; Anti; Antibodies; Antibody; Arbitrary concentration; Autoantibodies; Autoantibody; CF; Comp fixation; Compfix; Complement fixation; Enzootic pneumonia; ID; 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; QNT; Quan; Quant; Quantitative; Random; 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 M. pneumoniae Ab CF Qn (S) (52987-5)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

M. pneumoniae Ab CF Qn (S)Mycoplasma pneumoniae Ab [Units/volume] in Serum by Complement fixationM pneumo Ab Ser CF-aCncMycoplasma pneumoniae AbMICROMycoplasma pneumoniae antibody, BloodACnc

Frequently asked questions

Code details

Code52987-5

SystemLOINC

Display nameM. pneumoniae Ab CF Qn (S)

DescriptionMycoplasma pneumoniae Ab

Short nameM pneumo Ab Ser CF-aCnc

ComponentMycoplasma pneumoniae Ab

PropertyACnc

TimingPt

System (specimen)Ser

ScaleQn

MethodComp fix

ClassMICRO

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.24

Last changed2.69

Consumer names

Mycoplasma pneumoniae antibody, Blood

Part names

Mycoplasma pneumoniae AbACncPtSerQnComp fixArbitrary ConcentrationPoint in time (spot)SerumComplement fixation

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.