LOINCActiveObservation

LOINC Code 41279-1: B. burgdorferi IgG/B. burgdorferi IgM (S) [Ratio]

41279-1 is a LOINC code used to identify B. burgdorferi IgG/B. burgdorferi IgM (S) [Ratio] 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.IgG/Borrelia burgdorferi Ab.IgM. 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 Borrelia burgdorferi Ab.IgG/Borrelia burgdorferi 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: Observation

What it does not mean

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

Key facts

  • Borrelia burgdorferi IgG Ab/IgM Ab [Ratio] in Serum
  • Borrelia burgdorferi Ab.IgG/Borrelia burgdorferi Ab.IgM
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; B burg; B burgdor; B burgdorferi; Bb; Burgdorf; ID; Immune globulin G; Immune globulin M; Immunoglobulin G; Immunoglobulin M; Infectious Disease; InfectiousDisease; Lyme; Lyme disease; Lymes; Microbiology; Point in time; QNT; Quan; Quant; Quantitative; Random; Ratios; Rto; 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

B. burgdorferi IgG/B. burgdorferi IgM (S) [Ratio]Borrelia burgdorferi IgG Ab/IgM Ab [Ratio] in SerumB burgdor IgG/IgM Ser-RtoBorrelia burgdorferi Ab.IgG/Borrelia burgdorferi Ab.IgMMICROBorrelia burgdorferi/Borrelia burgdorferi IgM Antibody, BloodRatio

Frequently asked questions

Code details

Code41279-1
SystemLOINC
Display nameB. burgdorferi IgG/B. burgdorferi IgM (S) [Ratio]
DescriptionBorrelia burgdorferi Ab.IgG/Borrelia burgdorferi Ab.IgM
Short nameB burgdor IgG/IgM Ser-Rto
ComponentBorrelia burgdorferi Ab.IgG/Borrelia burgdorferi Ab.IgM
PropertyRatio
TimingPt
System (specimen)Ser
ScaleQn
ClassMICRO
Example unitsIndex
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.15
Last changed2.73

Consumer names

Borrelia burgdorferi/Borrelia burgdorferi IgM Antibody, Blood

Part names

Borrelia burgdorferi Ab.IgG/Borrelia burgdorferi Ab.IgMRatioPtSerQnPoint 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.