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.

LOINC

LOINC Code 6342-0: Chlamydia sp Ab CF (S) [Titer]

Name: LOINC Code 6342-0: Chlamydia sp Ab CF (S) [Titer]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:42.802Z

6342-0 is a LOINC code used to identify Chlamydia sp Ab CF (S) [Titer] 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 Chlamydia sp Ab. 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 Chlamydia sp 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: DEPRECATED
Method: Comp fix

What it does not mean

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

Key facts

Deprecated Chlamydia sp Ab [Titer] in Serum by Complement fixation
Chlamydia sp Ab
ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; CF; Chlam; Chlamid; Comp fixation; Compfix; Complement fixation; Dilution factor; Dilution Factor (Titer); ID; Infectious Disease; InfectiousDisease; Microbiology; Point in time; QNT; Quan; Quant; Quantitative; Random; Serum; species; spp; SR; Titer; Titered; Titre; Ttr

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

Chlamydia sp Ab CF (S) [Titer]Deprecated Chlamydia sp Ab [Titer] in Serum by Complement fixationDeprecated Chlamydia Ab Titr Ser CFChlamydia sp AbMICROChlamydia sp antibody, BloodTitr

Frequently asked questions

Code details

Code6342-0

SystemLOINC

Display nameChlamydia sp Ab CF (S) [Titer]

DescriptionChlamydia sp Ab

Short nameDeprecated Chlamydia Ab Titr Ser CF

ComponentChlamydia sp Ab

PropertyTitr

TimingPt

System (specimen)Ser

ScaleQn

MethodComp fix

ClassMICRO

Example unitstiter

StatusDEPRECATED

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0f

Last changed2.36

Consumer names

Chlamydia sp antibody, Blood

Part names

Chlamydia sp AbTitrPtSerQnComp fixTiterPoint 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.