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 14513-6: C. trachomatis Ag IF Ql (Urine sed)

Name: LOINC Code 14513-6: C. trachomatis Ag IF Ql (Urine sed)
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

14513-6 is a LOINC code used to identify C. trachomatis Ag IF Ql (Urine sed) 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 Ag. It is commonly used with the system or sample type Urine sed.

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 Chlamydia trachomatis Ag. It is commonly used with the system or sample type Urine sed.

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

Chlamydia trachomatis Ag [Presence] in Urine sediment by Immunofluorescence
Chlamydia trachomatis Ag
ACIF; Anticomplement Immunofluorescence; Antigen; Antigens; C trac; C trach; C tracho; C trachomatis; Chlam; Chlam trac; Chlamid; CT; DFA; FA; Fluorescent antibody; Fluoresent; ID; IFA; Immune fluorescence; Immunoflour; Immunofluor; Immunofluorescence; Infectious Disease; InfectiousDisease; LGV; Lymphogranuloma venereum; Microbiology; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Screen; Time Resolved Fluorescence; Trachoma; TRF; UA; UR; Urine sediment; Urn; UrnS

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 C. trachomatis Ag IF Ql (Urine sed) (14513-6)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

C. trachomatis Ag IF Ql (Urine sed)Chlamydia trachomatis Ag [Presence] in Urine sediment by ImmunofluorescenceC trach Ag UrnS Ql IFChlamydia trachomatis AgMICROChlamydia trachomatis antigen, Urine sedimentPrThr

Frequently asked questions

Code details

Code14513-6

SystemLOINC

Display nameC. trachomatis Ag IF Ql (Urine sed)

DescriptionChlamydia trachomatis Ag

Short nameC trach Ag UrnS Ql IF

ComponentChlamydia trachomatis Ag

PropertyPrThr

TimingPt

System (specimen)Urine sed

ScaleOrd

MethodIF

ClassMICRO

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0k

Last changed2.56

Consumer names

Chlamydia trachomatis antigen, Urine sediment

Part names

Chlamydia trachomatis AgPrThrPtUrine sedOrdIFPresence or ThresholdPoint in time (spot)Urine sedimentImmunofluorescence (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.