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 42897-9: C. burnetii phase 1 IgM IF Qn (S)

Name: LOINC Code 42897-9: C. burnetii phase 1 IgM IF Qn (S)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:28.586Z

42897-9 is a LOINC code used to identify C. burnetii phase 1 IgM IF Qn (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 Coxiella burnetii phase 1 Ab.IgM. 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 Coxiella burnetii phase 1 Ab.IgM. 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

Coxiella burnetii phase 1 IgM Ab [Units/volume] in Serum by Immunofluorescence
Coxiella burnetii phase 1 Ab.IgM
ABS; Aby; ACIF; Antby; Anti; Antibodies; Antibody; Anticomplement Immunofluorescence; Arbitrary concentration; Autoantibodies; Autoantibody; C burnet; C burnet Ph1; C burnetii; Coxiella burnetii phase I; Coxiella burnettii; FA; Fluorescent antibody; Fluoresent; i; ID; IFA; Immune fluorescence; Immune globulin M; Immunoflour; Immunofluor; Immunofluorescence; Immunoglobulin M; Infectious Disease; InfectiousDisease; Microbiology; Point in time; Q fev; Q fever; Qfever; QNT; Quan; Quant; Quantitative; Random; Serum; SR; Time Resolved Fluorescence; TRF

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. burnetii phase 1 IgM IF Qn (S)Coxiella burnetii phase 1 IgM Ab [Units/volume] in Serum by ImmunofluorescenceC burnet Ph1 IgM Ser IF-aCncCoxiella burnetii phase 1 Ab.IgMMICROCoxiella burnetii phase 1 IgM antibody, BloodACnc

Frequently asked questions

Code details

Code42897-9

SystemLOINC

Display nameC. burnetii phase 1 IgM IF Qn (S)

DescriptionCoxiella burnetii phase 1 Ab.IgM

Short nameC burnet Ph1 IgM Ser IF-aCnc

ComponentCoxiella burnetii phase 1 Ab.IgM

PropertyACnc

TimingPt

System (specimen)Ser

ScaleQn

MethodIF

ClassMICRO

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.16

Last changed2.73

Consumer names

Coxiella burnetii phase 1 IgM antibody, Blood

Part names

Coxiella burnetii phase 1 Ab.IgMACncPtSerQnIFCoxiella burnetii phase 1 IgMArbitrary ConcentrationPoint 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.