LOINCActiveBoth

LOINC Code 55165-5: Echinococcus sp IgG4 Ql (S)

55165-5 is a LOINC code used to identify Echinococcus sp IgG4 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 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 [Presence] in Serum
  • Echinococcus sp Ab.IgG4
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; Echinococcosis; ID; Infectious Disease; InfectiousDisease; Microbiology; Ordinal; p2; Point in time; PR; QL; Qual; Qualitative; Random; Screen; 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 Ql (S)Echinococcus sp IgG4 Ab [Presence] in SerumEchinococcus IgG4 Ser QlEchinococcus sp Ab.IgG4MICROEchinococcus sp IgG4 antibody, BloodPrThr

Frequently asked questions

Code details

Code55165-5
SystemLOINC
Display nameEchinococcus sp IgG4 Ql (S)
DescriptionEchinococcus sp Ab.IgG4
Short nameEchinococcus IgG4 Ser Ql
ComponentEchinococcus sp Ab.IgG4
PropertyPrThr
TimingPt
System (specimen)Ser
ScaleOrd
ClassMICRO
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.27
Last changed2.70

Consumer names

Echinococcus sp IgG4 antibody, Blood

Part names

Echinococcus sp Ab.IgG4PrThrPtSerOrdEchinococcus sp IgG4Presence or ThresholdPoint 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.

LOINC Code 55165-5 | HealthAssure