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LOINC Code 98734-7: SARS-CoV-2 (COVID-19) S protein RBD neut ab IA Qn

98734-7 is a LOINC code used to identify SARS-CoV-2 (COVID-19) S protein RBD neut ab IA Qn 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 SARS coronavirus 2 spike protein RBD Ab.neut. It is commonly used with the system or sample type Ser/Plas.

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 SARS coronavirus 2 spike protein RBD Ab.neut. It is commonly used with the system or sample type Ser/Plas.

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: IA

What it does not mean

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

Key facts

  • SARS-CoV-2 (COVID-19) S protein RBD neutralizing antibody [Units/volume] in Serum or Plasma by Immunoassay
  • SARS coronavirus 2 spike protein RBD Ab.neut
  • 2019 Novel Coronavirus; 2019-nCoV; ABS; Aby; Antby; Anti; Antibodies; Antibody; Arbitrary concentration; Autoantibodies; Autoantibody; Corona virus; COVID19; COVID-19; EIA; ELFA; ELISA; Enzyme immunoassay; IAA; ID; II; Infectious Disease; InfectiousDisease; MEIA; Microbiology; NAb; Pl; Plasma; Plsm; Point in time; PR; Prot; QNT; Quan; Quant; Quantitative; Random; SARS Coronavirus 1; SARS-CoV; SARS-CoV-1; SARS-CoV-2; SARS-CoV-2 S; SARS-CoV-2 S RBD; SARS-CoV-2 S RBD Nab; SerP; SerPl; SerPlas; Serum; Serum or plasma; Severe Acute Respiratory Syndrome; SR; SUDS; surrogate virus neutralization testing; sVNT; Viral Pneumonias; Wuhan coronavirus

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

SARS-CoV-2 (COVID-19) S protein RBD neut ab IA QnSARS-CoV-2 (COVID-19) S protein RBD neutralizing antibody [Units/volume] in Serum or Plasma by ImmunoassaySARS-CoV-2 S RBD NAb SerPl IA-aCncSARS coronavirus 2 spike protein RBD Ab.neutMICROSARS-CoV-2 (COVID-19) S protein RBD neutralizing antibody, BloodACnc

Frequently asked questions

Code details

Code98734-7
SystemLOINC
Display nameSARS-CoV-2 (COVID-19) S protein RBD neut ab IA Qn
DescriptionSARS coronavirus 2 spike protein RBD Ab.neut
Short nameSARS-CoV-2 S RBD NAb SerPl IA-aCnc
ComponentSARS coronavirus 2 spike protein RBD Ab.neut
PropertyACnc
TimingPt
System (specimen)Ser/Plas
ScaleQn
MethodIA
ClassMICRO
Example unitsIU/mL
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.72
Last changed2.72

Consumer names

SARS-CoV-2 (COVID-19) S protein RBD neutralizing antibody, Blood

Part names

SARS coronavirus 2 spike protein RBD Ab.neutACncPtSer/PlasQnIASARS-CoV-2 (COVID-19) spike protein receptor binding domain (RBD) neutralizing antibodyArbitrary ConcentrationPoint in time (spot)Serum or PlasmaImmunoassay

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.