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 46177-2: C. trachomatis D+E+F+G+H+I+J+K IgG (S) [Titer]

Name: LOINC Code 46177-2: C. trachomatis D+E+F+G+H+I+J+K IgG (S) [Titer]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:31.116Z

46177-2 is a LOINC code used to identify C. trachomatis D+E+F+G+H+I+J+K IgG (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 trachomatis D+E+F+G+H+I+J+K Ab.IgG. 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 trachomatis D+E+F+G+H+I+J+K 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

What it does not mean

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

Key facts

Chlamydia trachomatis D+E+F+G+H+I+J+K IgG Ab [Titer] in Serum
Chlamydia trachomatis D+E+F+G+H+I+J+K Ab.IgG
ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; C trac; C trach; C trach D; C trach D+E+F+G+H+I+J+K; C tracho; C trachomatis; Chlam; Chlam trac; Chlamid; CT; Dextro; Dilution factor; Dilution Factor (Titer); ID; Immune globulin G; Immunoglobulin G; Infectious Disease; InfectiousDisease; Kell Blood Group System; LGV; Lymphogranuloma venereum; Microbiology; Point in time; Random; Serum; SmQn; SR; Titer; Titered; Titre; Trachoma; 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

C. trachomatis D+E+F+G+H+I+J+K IgG (S) [Titer]Chlamydia trachomatis D+E+F+G+H+I+J+K IgG Ab [Titer] in SerumC trach D+E+F+G+H+I+J+K IgG Titr SerChlamydia trachomatis D+E+F+G+H+I+J+K Ab.IgGMICROChlamydia trachomatis D+E+F+G+H+I+J+K IgG antibody, BloodTitr

Frequently asked questions

Code details

Code46177-2

SystemLOINC

Display nameC. trachomatis D+E+F+G+H+I+J+K IgG (S) [Titer]

DescriptionChlamydia trachomatis D+E+F+G+H+I+J+K Ab.IgG

Short nameC trach D+E+F+G+H+I+J+K IgG Titr Ser

ComponentChlamydia trachomatis D+E+F+G+H+I+J+K Ab.IgG

PropertyTitr

TimingPt

System (specimen)Ser

ScaleSemiQn

ClassMICRO

Example unitstiter

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.17

Last changed2.75

Consumer names

Chlamydia trachomatis D+E+F+G+H+I+J+K IgG antibody, Blood

Part names

Chlamydia trachomatis D+E+F+G+H+I+J+K Ab.IgGTitrPtSerSemiQnChlamydia trachomatis D+E+F+G+H+I+J+K IgGTiterPoint 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.