LOINCActiveBoth

LOINC Code 105911-2: SARS-CoV-2 (COVID-19) IgG Ql (Specimen)

105911-2 is a LOINC code used to identify SARS-CoV-2 (COVID-19) IgG Ql (Specimen) 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 Ab.IgG. It is commonly used with the system or sample type XXX.

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 Ab.IgG. It is commonly used with the system or sample type XXX.

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

What it does not mean

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

Key facts

  • SARS-CoV-2 (COVID-19) IgG Ab [Presence] in Specimen
  • SARS coronavirus 2 Ab.IgG
  • 2019 Novel Coronavirus; 2019-nCoV; ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; Corona virus; COVID19; COVID-19; II; Immune globulin G; Immunoglobulin G; Microbiology; Misc; Miscellaneous; Ordinal; Other; Point in time; PR; QL; Qual; Qualitative; Random; SARS Coronavirus 1; SARS-CoV; SARS-CoV-1; SARS-CoV-2; Screen; Severe Acute Respiratory Syndrome; Spec; To be specified in another part of the message; Unspecified; 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) IgG Ql (Specimen)SARS-CoV-2 (COVID-19) IgG Ab [Presence] in SpecimenSARS-CoV-2 IgG Spec QlSARS coronavirus 2 Ab.IgGMICROSARS-CoV-2 (COVID-19) IgG antibody, SpecimenPrThr

Frequently asked questions

Code details

Code105911-2
SystemLOINC
Display nameSARS-CoV-2 (COVID-19) IgG Ql (Specimen)
DescriptionSARS coronavirus 2 Ab.IgG
Short nameSARS-CoV-2 IgG Spec Ql
ComponentSARS coronavirus 2 Ab.IgG
PropertyPrThr
TimingPt
System (specimen)XXX
ScaleOrd
ClassMICRO
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.78
Last changed2.78

Consumer names

SARS-CoV-2 (COVID-19) IgG antibody, Specimen

Part names

SARS coronavirus 2 Ab.IgGPrThrPtXXXOrdSARS-CoV-2 (COVID-19) IgGPresence or ThresholdPoint in time (spot)

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.