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LOINC Code 6913-8: C. pneumoniae IgG IF (S) [Titer]

6913-8 is a LOINC code used to identify C. pneumoniae IgG IF (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 Chlamydophila pneumoniae Ab.IgG. 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 Chlamydophila pneumoniae Ab.IgG. 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: IF

What it does not mean

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

Key facts

  • Chlamydophila pneumoniae IgG Ab [Titer] in Serum by Immunofluorescence
  • Chlamydophila pneumoniae Ab.IgG
  • ABS; Aby; ACIF; Antby; Anti; Antibodies; Antibody; Anticomplement Immunofluorescence; Autoantibodies; Autoantibody; C pneum; C pneumo; C pneumoniae; Chlamydia; Chlamydia pneumoniae; CPN; Dilution factor; Dilution Factor (Titer); FA; Fluorescent antibody; Fluoresent; ID; IFA; Immune fluorescence; Immune globulin G; Immunoflour; Immunofluor; Immunofluorescence; Immunoglobulin G; Infectious Disease; InfectiousDisease; Microbiology; Pneu; pneum; Pneumo; Pneumon; Pneumonia; Point in time; Random; Serum; SmQn; SR; Time Resolved Fluorescence; Titer; Titered; Titre; TRF; Ttr; Twar agent

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

C. pneumoniae IgG IF (S) [Titer]Chlamydophila pneumoniae IgG Ab [Titer] in Serum by ImmunofluorescenceC pneum IgG Titr Ser IFChlamydophila pneumoniae Ab.IgGMICROChlamydophila pneumoniae IgG antibody, BloodTitr

Frequently asked questions

Code details

Code6913-8
SystemLOINC
Display nameC. pneumoniae IgG IF (S) [Titer]
DescriptionChlamydophila pneumoniae Ab.IgG
Short nameC pneum IgG Titr Ser IF
ComponentChlamydophila pneumoniae Ab.IgG
PropertyTitr
TimingPt
System (specimen)Ser
ScaleSemiQn
MethodIF
ClassMICRO
Example unitstiter
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0h(2)
Last changed2.75

Consumer names

Chlamydophila pneumoniae IgG antibody, Blood

Part names

Chlamydophila pneumoniae Ab.IgGTitrPtSerSemiQnIFChlamydophila pneumoniae IgGTiterPoint in time (spot)SerumImmunofluorescence (IF)

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 6913-8 | HealthAssure