HealthAssure
HealthAssureGood Life
LOINCActiveObservation

LOINC Code 42237-8: B. burgdorferi 18kD IgG IB Ql (Syn fld)

42237-8 is a LOINC code used to identify B. burgdorferi 18kD IgG IB Ql (Syn fld) 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 18kD Ab.IgG. It is commonly used with the system or sample type Synv fld.

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 18kD Ab.IgG. It is commonly used with the system or sample type Synv 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: IB

What it does not mean

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

Key facts

  • Borrelia burgdorferi 18kD IgG Ab [Presence] in Synovial fluid by Immunoblot
  • Borrelia burgdorferi 18kD Ab.IgG
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; B burg; B burgdor; B burgdor18kD; B burgdorferi; Bb; Blt; Burgdorf; ID; IMMUNE BLOT; Immune globulin G; Immunobl; Immunoblot; Immunoglobulin G; Infectious Disease; InfectiousDisease; Joint aspirate; Joint fld; Joint flu; Joint fluid; Lyme; Lyme disease; Lymes; Microbiology; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Rheum; Rheumatology; RIBA; Screen; SF; SNV; Syn; Syn fl; Synov; Synovial fluid; WB; WBLOT; West blot; West blt; Western blot

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 18kD IgG IB Ql (Syn fld)Borrelia burgdorferi 18kD IgG Ab [Presence] in Synovial fluid by ImmunoblotB burgdor18kD IgG Snv Ql IBBorrelia burgdorferi 18kD Ab.IgGMICROBorrelia burgdorferi 18kD IgG antibody, Synovial fluidPrThr

Frequently asked questions

Code details

Code42237-8
SystemLOINC
Display nameB. burgdorferi 18kD IgG IB Ql (Syn fld)
DescriptionBorrelia burgdorferi 18kD Ab.IgG
Short nameB burgdor18kD IgG Snv Ql IB
ComponentBorrelia burgdorferi 18kD Ab.IgG
PropertyPrThr
TimingPt
System (specimen)Synv fld
ScaleOrd
MethodIB
ClassMICRO
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.16
Last changed2.73

Consumer names

Borrelia burgdorferi 18kD IgG antibody, Synovial fluid

Part names

Borrelia burgdorferi 18kD Ab.IgGPrThrPtSynv fldOrdIBBorrelia burgdorferi 18kD IgGPresence or ThresholdPoint in time (spot)Synovial fluidImmunoblot

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.