LOINCActiveBoth

LOINC Code 93502-3: NMDAR subunit 1 IgG Cell binding immunofluorescent assay Ql (CSF)

93502-3 is a LOINC code used to identify NMDAR subunit 1 IgG Cell binding immunofluorescent assay 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 N-methyl-D-aspartate receptor subunit 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 N-methyl-D-aspartate receptor subunit 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: CBA IFA

What it does not mean

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

Key facts

  • NMDAR subunit 1 IgG Ab [Presence] in Cerebral spinal fluid by Cell binding immunofluorescent assay
  • N-methyl-D-aspartate receptor subunit 1 Ab.IgG
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Asp; Aspartic acid; Autoantibodies; Autoantibody; Cerebral spinal fluid; Cerebrospinal Fl; Dextro; Encephalitis; Glutamate receptor ionotropic, NMDA 1; i; Immune globulin G; Immunoglobulin G; Indirect Fluorescence Antibody; NMDA receptor; NMDAR; NMDAR1; N-Methylaspartate Receptors; N-Methyl-D-aspartic Acid; Ordinal; Paraneoplastic syndrome; Point in time; PR; QL; Qual; Qualitative; Random; Rec; Recept; Receptors; Recp; Recptr; Screen; Serology; Spinal Fl; Spinal Fld; Spinal Flu; Spinal Fluid

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

NMDAR subunit 1 IgG Cell binding immunofluorescent assay Ql (CSF)NMDAR subunit 1 IgG Ab [Presence] in Cerebral spinal fluid by Cell binding immunofluorescent assayNMDAR1 IgG CSF Ql CBA IFAN-methyl-D-aspartate receptor subunit 1 Ab.IgGSERONMDAR subunit 1 IgG antibody, Spinal fluidPrThr

Frequently asked questions

Code details

Code93502-3
SystemLOINC
Display nameNMDAR subunit 1 IgG Cell binding immunofluorescent assay Ql (CSF)
DescriptionN-methyl-D-aspartate receptor subunit 1 Ab.IgG
Short nameNMDAR1 IgG CSF Ql CBA IFA
ComponentN-methyl-D-aspartate receptor subunit 1 Ab.IgG
PropertyPrThr
TimingPt
System (specimen)CSF
ScaleOrd
MethodCBA IFA
ClassSERO
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.67
Last changed2.69

Consumer names

NMDAR subunit 1 IgG antibody, Spinal fluid

Part names

N-methyl-D-aspartate receptor subunit 1 Ab.IgGPrThrPtCSFOrdCBA IFAPresence or ThresholdPoint in time (spot)Cerebral spinal fluidCell binding immunofluorescent assay

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 93502-3 | HealthAssure