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 42769-0: HTLV I+II Ab Nar (S) [Interp]

Name: LOINC Code 42769-0: HTLV I+II Ab Nar (S) [Interp]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:28.129Z

42769-0 is a LOINC code used to identify HTLV I+II Ab Nar (S) [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 HTLV I+II Ab. 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 HTLV I+II Ab. 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: Observation

What it does not mean

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

Key facts

HTLV I+II Ab [Interpretation] in Serum Narrative
HTLV I+II Ab
2; ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; HTLV type 1+2; HTLV type I+II; Human T-cell Leukemia Virus; Human T-cell Lymphotrophic Virus; ID; Impression; Impression/interpretation of study; Impressions; Infectious Disease; InfectiousDisease; Interp; Interpretation; Microbiology; Narrative; Point in time; Random; Report; 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.

Common synonyms

HTLV I+II Ab Nar (S) [Interp]HTLV I+II Ab [Interpretation] in Serum NarrativeHTLV I+II Ab Ser-ImpHTLV I+II AbMICROInterpretation of HTLV I+II antibody test result, BloodImp

Frequently asked questions

Code details

Code42769-0

SystemLOINC

Display nameHTLV I+II Ab Nar (S) [Interp]

DescriptionHTLV I+II Ab

Short nameHTLV I+II Ab Ser-Imp

ComponentHTLV I+II Ab

PropertyImp

TimingPt

System (specimen)Ser

ScaleNar

ClassMICRO

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.16

Last changed2.73

Consumer names

Interpretation of HTLV I+II antibody test result, Blood

Part names

HTLV I+II AbImpPtSerNarImpression/interpretation of studyPoint 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.