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 28058-6: B. burgdorferi 21kD IgG IB Ql (CSF)

Name: LOINC Code 28058-6: B. burgdorferi 21kD IgG IB Ql (CSF)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:14.572Z

28058-6 is a LOINC code used to identify B. burgdorferi 21kD IgG IB Ql (CSF) 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 21kD Ab.IgG. It is commonly used with the system or sample type CSF.

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 21kD Ab.IgG. It is commonly used with the system or sample type CSF.

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 21kD IgG Ab [Presence] in Cerebral spinal fluid by Immunoblot
Borrelia burgdorferi 21kD Ab.IgG
ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; B burg; B burgdor; B burgdor21kD; B burgdorferi; Bb; Blt; Burgdorf; Cerebral spinal fluid; Cerebrospinal Fl; ID; IMMUNE BLOT; Immune globulin G; Immunobl; Immunoblot; Immunoglobulin G; Infectious Disease; InfectiousDisease; Lyme; Lyme disease; Lymes; Microbiology; Neuro; Neurology; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; RIBA; Screen; Spinal Fl; Spinal Fld; Spinal Flu; Spinal 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 21kD IgG IB Ql (CSF)Borrelia burgdorferi 21kD IgG Ab [Presence] in Cerebral spinal fluid by ImmunoblotB burgdor21kD IgG CSF Ql IBBorrelia burgdorferi 21kD Ab.IgGMICROBorrelia burgdorferi 21kD IgG antibody, Spinal fluidPrThr

Frequently asked questions

Code details

Code28058-6

SystemLOINC

Display nameB. burgdorferi 21kD IgG IB Ql (CSF)

DescriptionBorrelia burgdorferi 21kD Ab.IgG

Short nameB burgdor21kD IgG CSF Ql IB

ComponentBorrelia burgdorferi 21kD Ab.IgG

PropertyPrThr

TimingPt

System (specimen)CSF

ScaleOrd

MethodIB

ClassMICRO

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.00

Last changed2.73

Consumer names

Borrelia burgdorferi 21kD IgG antibody, Spinal fluid

Part names

Borrelia burgdorferi 21kD Ab.IgGPrThrPtCSFOrdIBBorrelia burgdorferi 21kD IgGPresence or ThresholdPoint in time (spot)Cerebral spinal 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.