LOINCActiveBoth

LOINC Code 93870-4: NMDAR subunit 1 Ab Cell binding immunofluorescent assay Ql (S)

93870-4 is a LOINC code used to identify NMDAR subunit 1 Ab Cell binding immunofluorescent assay Ql (S) 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. It is commonly used with the system or sample type Ser.

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. It is commonly used with the system or sample type Ser.

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 Ab [Presence] in Serum by Cell binding immunofluorescent assay
  • N-methyl-D-aspartate receptor subunit 1 Ab
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Asp; Aspartic acid; Autoantibodies; Autoantibody; Dextro; Encephalitis; Glutamate receptor ionotropic, NMDA 1; i; 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; Serum; SR

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 Ab Cell binding immunofluorescent assay Ql (S)NMDAR subunit 1 Ab [Presence] in Serum by Cell binding immunofluorescent assayNMDAR1 Ab Ser Ql CBA IFAN-methyl-D-aspartate receptor subunit 1 AbSERONMDAR subunit 1 antibody, BloodPrThr

Frequently asked questions

Code details

Code93870-4
SystemLOINC
Display nameNMDAR subunit 1 Ab Cell binding immunofluorescent assay Ql (S)
DescriptionN-methyl-D-aspartate receptor subunit 1 Ab
Short nameNMDAR1 Ab Ser Ql CBA IFA
ComponentN-methyl-D-aspartate receptor subunit 1 Ab
PropertyPrThr
TimingPt
System (specimen)Ser
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 antibody, Blood

Part names

N-methyl-D-aspartate receptor subunit 1 AbPrThrPtSerOrdCBA IFANMDAR subunit 1 AbPresence or ThresholdPoint in time (spot)SerumCell 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.