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 13222-5: C. trachomatis C Ab Qn

Name: LOINC Code 13222-5: C. trachomatis C Ab Qn
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:23.610Z

13222-5 is a LOINC code used to identify C. trachomatis C Ab Qn 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 C Ab. It is commonly used with the system or sample type Ser/Plas.

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 C Ab. It is commonly used with the system or sample type Ser/Plas.

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

What it does not mean

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

Key facts

Deprecated Chlamydia trachomatis C Ab [Units/volume] in Serum
Chlamydia trachomatis C Ab
ABS; Aby; Antby; Anti; Antibodies; Antibody; Arbitrary concentration; Autoantibodies; Autoantibody; C trac; C trach; C trach C; C tracho; C trachomatis; Chlam; Chlam trac; Chlamid; Chlamydia trachomatis type C; CT; ID; Infectious Disease; InfectiousDisease; LGV; Lymphogranuloma venereum; Microbiology; Pl; Plasma; Plsm; Point in time; QNT; Quan; Quant; Quantitative; Random; Rh Blood Group System; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR; Trachoma

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 C Ab QnDeprecated Chlamydia trachomatis C Ab [Units/volume] in SerumDeprecated C trach C Ab SerPl-aCncChlamydia trachomatis C AbMICROChlamydia trachomatis C antibody, BloodACnc

Frequently asked questions

Code details

Code13222-5

SystemLOINC

Display nameC. trachomatis C Ab Qn

DescriptionChlamydia trachomatis C Ab

Short nameDeprecated C trach C Ab SerPl-aCnc

ComponentChlamydia trachomatis C Ab

PropertyACnc

TimingPt

System (specimen)Ser/Plas

ScaleQn

ClassMICRO

StatusDEPRECATED

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0j-a

Last changed2.69

Consumer names

Chlamydia trachomatis C antibody, Blood

Part names

Chlamydia trachomatis C AbACncPtSer/PlasQnArbitrary ConcentrationPoint in time (spot)Serum or Plasma

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.