What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActiveBoth

LOINC Code 40984-7: Parainfluenza virus 2 IgG IA Ql (S)

Name: LOINC Code 40984-7: Parainfluenza virus 2 IgG IA Ql (S)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:27.679Z

40984-7 is a LOINC code used to identify Parainfluenza virus 2 IgG IA 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 Parainfluenza virus 2 Ab.IgG. 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 Parainfluenza virus 2 Ab.IgG. 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: IA

What it does not mean

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

Key facts

Parainfluenza virus 2 IgG Ab [Presence] in Serum by Immunoassay
Parainfluenza virus 2 Ab.IgG
ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; EIA; ELFA; ELISA; Enzyme immunoassay; HPIV; HPIV2; Human rubulavirus 2; IAA; ID; II; Immune globulin G; Immunoglobulin G; Infectious Disease; InfectiousDisease; MEIA; Microbiology; Ordinal; Para; Parainflu; Parainfluenza type 2; Parainfluenza type II; PI2; Point in time; PR; QL; Qual; Qualitative; Random; Screen; Serum; SR; SUDS

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

Parainfluenza virus 2 IgG IA Ql (S)Parainfluenza virus 2 IgG Ab [Presence] in Serum by ImmunoassayHPIV2 IgG Ser Ql IAParainfluenza virus 2 Ab.IgGMICROParainfluenza virus 2 IgG antibody, BloodPrThr

Frequently asked questions

Code details

Code40984-7

SystemLOINC

Display nameParainfluenza virus 2 IgG IA Ql (S)

DescriptionParainfluenza virus 2 Ab.IgG

Short nameHPIV2 IgG Ser Ql IA

ComponentParainfluenza virus 2 Ab.IgG

PropertyPrThr

TimingPt

System (specimen)Ser

ScaleOrd

MethodIA

ClassMICRO

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.15

Last changed2.56

Consumer names

Parainfluenza virus 2 IgG antibody, Blood

Part names

Parainfluenza virus 2 Ab.IgGPrThrPtSerOrdIAParainfluenza virus 2 IgGPresence or ThresholdPoint in time (spot)SerumImmunoassay

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.