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 53370-3: Echinococcus sp IgG4 Qn (S)

Name: LOINC Code 53370-3: Echinococcus sp IgG4 Qn (S)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:36.030Z

53370-3 is a LOINC code used to identify Echinococcus sp IgG4 Qn (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 Echinococcus sp Ab.IgG4. 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 Echinococcus sp Ab.IgG4. 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

What it does not mean

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

Key facts

Echinococcus sp IgG4 Ab [Units/volume] in Serum
Echinococcus sp Ab.IgG4
ABS; Aby; Antby; Anti; Antibodies; Antibody; Arbitrary concentration; Autoantibodies; Autoantibody; Echinococcosis; ID; Infectious Disease; InfectiousDisease; Microbiology; p2; Point in time; QNT; Quan; Quant; Quantitative; Random; Serum; species; spp; 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

Echinococcus sp IgG4 Qn (S)Echinococcus sp IgG4 Ab [Units/volume] in SerumEchinococcus IgG4 Ser-aCncEchinococcus sp Ab.IgG4MICROEchinococcus sp IgG4 antibody, BloodACnc

Frequently asked questions

Code details

Code53370-3

SystemLOINC

Display nameEchinococcus sp IgG4 Qn (S)

DescriptionEchinococcus sp Ab.IgG4

Short nameEchinococcus IgG4 Ser-aCnc

ComponentEchinococcus sp Ab.IgG4

PropertyACnc

TimingPt

System (specimen)Ser

ScaleQn

ClassMICRO

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.24

Last changed2.69

Consumer names

Echinococcus sp IgG4 antibody, Blood

Part names

Echinococcus sp Ab.IgG4ACncPtSerQnEchinococcus sp IgG4Arbitrary ConcentrationPoint in time (spot)Serum

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.