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.

LOINCObservation

LOINC Code 13504-6: B. burgdorferi Ab [Interp]

Name: LOINC Code 13504-6: B. burgdorferi Ab [Interp]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:24.415Z

13504-6 is a LOINC code used to identify B. burgdorferi Ab [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 Borrelia burgdorferi 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 Borrelia burgdorferi 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
Order vs observation: Observation

What it does not mean

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

Key facts

Deprecated Borrelia burgdorferi Ab [interpretation] in Serum
Borrelia burgdorferi Ab
ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; B burg; B burgdor; B burgdorferi; Bb; Burgdorf; ID; Impression; Impression/interpretation of study; Impressions; Infectious Disease; InfectiousDisease; Interp; Interpretation; Lyme; Lyme disease; Lymes; Microbiology; Nominal; Pl; Plasma; Plsm; Point in time; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; 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

B. burgdorferi Ab [Interp]Deprecated Borrelia burgdorferi Ab [interpretation] in SerumDeprecated B burgdor Ab SerPl-ImpBorrelia burgdorferi AbMICROBorrelia burgdorferi antibody, BloodImp

Frequently asked questions

Code details

Code13504-6

SystemLOINC

Display nameB. burgdorferi Ab [Interp]

DescriptionBorrelia burgdorferi Ab

Short nameDeprecated B burgdor Ab SerPl-Imp

ComponentBorrelia burgdorferi Ab

PropertyImp

TimingPt

System (specimen)Ser/Plas

ScaleNom

ClassMICRO

StatusDEPRECATED

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0j-a

Last changed2.36

Consumer names

Borrelia burgdorferi antibody, Blood

Part names

Borrelia burgdorferi AbImpPtSer/PlasNomImpression/interpretation of studyPoint 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.