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LOINC Code 58809-5: R. conorii IgG IF (CSF) [Titer]

58809-5 is a LOINC code used to identify R. conorii IgG IF (CSF) [Titer] 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 Rickettsia conorii Ab.IgG. It is commonly used with the system or sample type CSF.

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 Rickettsia conorii 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: Both
  • Method: IF

What it does not mean

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

Key facts

  • Rickettsia conorii IgG Ab [Titer] in Cerebral spinal fluid by Immunofluorescence
  • Rickettsia conorii Ab.IgG
  • ABS; Aby; ACIF; Antby; Anti; Antibodies; Antibody; Anticomplement Immunofluorescence; Autoantibodies; Autoantibody; Boutonneuse fever; Cerebral spinal fluid; Cerebrospinal Fl; Dilution factor; Dilution Factor (Titer); FA; Fluorescent antibody; Fluoresent; ID; IFA; Immune fluorescence; Immune globulin G; Immunoflour; Immunofluor; Immunofluorescence; Immunoglobulin G; Infectious Disease; InfectiousDisease; Mediterranean spotted fever; Microbiology; Neuro; Neurology; Point in time; R conorii; Random; Ricket; Rickettsial; SmQn; Spinal Fl; Spinal Fld; Spinal Flu; Spinal Fluid; Spotted fever; Time Resolved Fluorescence; Titer; Titered; Titre; TRF; Ttr

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

R. conorii IgG IF (CSF) [Titer]Rickettsia conorii IgG Ab [Titer] in Cerebral spinal fluid by ImmunofluorescenceR conorii IgG Titr CSF IFRickettsia conorii Ab.IgGMICRORickettsia conorii IgG antibody, Spinal fluidTitr

Frequently asked questions

Code details

Code58809-5
SystemLOINC
Display nameR. conorii IgG IF (CSF) [Titer]
DescriptionRickettsia conorii Ab.IgG
Short nameR conorii IgG Titr CSF IF
ComponentRickettsia conorii Ab.IgG
PropertyTitr
TimingPt
System (specimen)CSF
ScaleSemiQn
MethodIF
ClassMICRO
Example unitsTiter
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.32
Last changed2.75

Consumer names

Rickettsia conorii IgG antibody, Spinal fluid

Part names

Rickettsia conorii Ab.IgGTitrPtCSFSemiQnIFRickettsia conorii IgGTiterPoint in time (spot)Cerebral spinal fluidImmunofluorescence (IF)

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.

LOINC Code 58809-5 | HealthAssure