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 44978-5: C. psittaci IgA Ql (S)

Name: LOINC Code 44978-5: C. psittaci IgA Ql (S)
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

44978-5 is a LOINC code used to identify C. psittaci IgA Ql (S) 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 psittaci Ab.IgA. 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 psittaci Ab.IgA. 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

Chlamydophila psittaci IgA Ab [Presence] in Serum
Chlamydophila psittaci Ab.IgA
ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; Avian chlamydiosis; C psittaci; Chlamydia; Chlamydia psittaci; Chlamydial abortion; CPS; Enzootic abortion of ewes; ID; Immune globulin A; Immunoglobulin A; Infectious Disease; InfectiousDisease; Microbiology; Ordinal; Ornithosis; Ovine chlamydiosis; Point in time; PR; Psittacosis; QL; Qual; Qualitative; Random; Screen; Serum; SR

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. psittaci IgA Ql (S) (44978-5)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

C. psittaci IgA Ql (S)Chlamydophila psittaci IgA Ab [Presence] in SerumC psittaci IgA Ser QlChlamydophila psittaci Ab.IgAMICROChlamydophila psittaci IgA antibody, BloodPrThr

Frequently asked questions

Code details

Code44978-5

SystemLOINC

Display nameC. psittaci IgA Ql (S)

DescriptionChlamydophila psittaci Ab.IgA

Short nameC psittaci IgA Ser Ql

ComponentChlamydophila psittaci Ab.IgA

PropertyPrThr

TimingPt

System (specimen)Ser

ScaleOrd

ClassMICRO

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.17

Last changed2.73

Consumer names

Chlamydophila psittaci IgA antibody, Blood

Part names

Chlamydophila psittaci Ab.IgAPrThrPtSerOrdChlamydophila psittaci IgAPresence or ThresholdPoint 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.