LOINCActiveBoth

LOINC Code 82985-3: Leucine-rich glioma-inactivated protein 1 IgG IF Ql (CSF)

82985-3 is a LOINC code used to identify Leucine-rich glioma-inactivated protein 1 IgG IF 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 Leucine-rich glioma-inactivated protein 1 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 Leucine-rich glioma-inactivated protein 1 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

  • Leucine-rich glioma-inactivated protein 1 IgG Ab [Presence] in Cerebral spinal fluid by Immunofluorescence
  • Leucine-rich glioma-inactivated protein 1 Ab.IgG
  • ABS; Aby; ACIF; Antby; Anti; Antibodies; Antibody; Anticomplement Immunofluorescence; Autoantibodies; Autoantibody; Cerebral spinal fluid; Cerebrospinal Fl; FA; Fluorescent antibody; Fluoresent; i; IFA; Immune fluorescence; Immune globulin G; Immunoflour; Immunofluor; Immunofluorescence; Immunoglobulin G; Leu; LGI1; LGI1 Ab; Neuro; Neurology; Ordinal; Point in time; PR; Prot; QL; Qual; Qualitative; Random; Screen; Serology; Spinal Fl; Spinal Fld; Spinal Flu; Spinal Fluid; Time Resolved Fluorescence; TRF

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

Leucine-rich glioma-inactivated protein 1 IgG IF Ql (CSF)Leucine-rich glioma-inactivated protein 1 IgG Ab [Presence] in Cerebral spinal fluid by ImmunofluorescenceLGI1 IgG CSF Ql IFLeucine-rich glioma-inactivated protein 1 Ab.IgGSEROLeucine-rich glioma-inactivated protein 1 IgG antibody, Spinal fluidPrThr

Frequently asked questions

Code details

Code82985-3
SystemLOINC
Display nameLeucine-rich glioma-inactivated protein 1 IgG IF Ql (CSF)
DescriptionLeucine-rich glioma-inactivated protein 1 Ab.IgG
Short nameLGI1 IgG CSF Ql IF
ComponentLeucine-rich glioma-inactivated protein 1 Ab.IgG
PropertyPrThr
TimingPt
System (specimen)CSF
ScaleOrd
MethodIF
ClassSERO
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.58
Last changed2.58

Consumer names

Leucine-rich glioma-inactivated protein 1 IgG antibody, Spinal fluid

Part names

Leucine-rich glioma-inactivated protein 1 Ab.IgGPrThrPtCSFOrdIFLeucine-rich glioma-inactivated protein 1 IgGPresence or ThresholdPoint 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.