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.

LOINCActiveObservation

LOINC Code 49309-8: Nuclear Ab pattern IF Nar (Body fld) [Interp]

Name: LOINC Code 49309-8: Nuclear Ab pattern IF Nar (Body fld) [Interp]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:33.939Z

49309-8 is a LOINC code used to identify Nuclear Ab pattern IF Nar (Body fld) [Interp] 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 Nuclear Ab pattern. It is commonly used with the system or sample type Body fld.

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 Nuclear Ab pattern. It is commonly used with the system or sample type Body fld.

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: Observation
Method: IF

What it does not mean

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

Key facts

Nuclear Ab pattern [Interpretation] in Body fluid by Immunofluorescence Narrative
Nuclear Ab pattern
ABS; Aby; ACIF; ANA; ANA Pat; ANF; Antby; Anti; Antibodies; Antibody; Anticomplement Immunofluorescence; Antinuclear antibody; Autoantibodies; Autoantibody; B/F; BF; bod; Bodies; Body fluid; Body fluid, unsp; FA; FANA; Fl; Fld; FLU; Fluid; Fluorescent antibody; Fluoresent; IFA; Immune fluorescence; Immunoflour; Immunofluor; Immunofluorescence; Impression; Impression/interpretation of study; Impressions; Interp; Interpretation; NA; Narrative; Nuc; Point in time; Random; Report; Serology; 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

Nuclear Ab pattern IF Nar (Body fld) [Interp]Nuclear Ab pattern [Interpretation] in Body fluid by Immunofluorescence NarrativeANA Pat Fld IF-ImpNuclear Ab patternSEROInterpretation of Nuclear Ab pattern test result, Body fluidImp

Frequently asked questions

Code details

Code49309-8

SystemLOINC

Display nameNuclear Ab pattern IF Nar (Body fld) [Interp]

DescriptionNuclear Ab pattern

Short nameANA Pat Fld IF-Imp

ComponentNuclear Ab pattern

PropertyImp

TimingPt

System (specimen)Body fld

ScaleNar

MethodIF

ClassSERO

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.21

Last changed2.22

Consumer names

Interpretation of Nuclear Ab pattern test result, Body fluid

Part names

Nuclear Ab patternImpPtBody fldNarIFImpression/interpretation of studyPoint in time (spot)Body fluidImmunofluorescence (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.