LOINCActiveObservation

LOINC Code 20666-4: Echovirus Ab (S) [Interp]

20666-4 is a LOINC code used to identify Echovirus Ab (S) [Interp] 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 Echovirus Ab. It is commonly used with the system or sample type Ser.

Reviewed by HealthAssure Clinical TeamUpdated 25 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 Echovirus Ab. 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: Observation

What it does not mean

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

Key facts

  • Echovirus Ab [Interpretation] in Serum
  • Echovirus Ab
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; Echo; Echo virus; ECV; EV; ID; Impression; Impression/interpretation of study; Impressions; Infectious Disease; InfectiousDisease; Interp; Interpretation; Microbiology; Nominal; Point in time; Random; Serum; 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

Echovirus Ab (S) [Interp]Echovirus Ab [Interpretation] in SerumECV Ab Ser-ImpEchovirus AbMICROEchovirus antibody, BloodImp

Frequently asked questions

Code details

Code20666-4
SystemLOINC
Display nameEchovirus Ab (S) [Interp]
DescriptionEchovirus Ab
Short nameECV Ab Ser-Imp
ComponentEchovirus Ab
PropertyImp
TimingPt
System (specimen)Ser
ScaleNom
ClassMICRO
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0m
Last changed2.26

Consumer names

Echovirus antibody, Blood

Part names

Echovirus AbImpPtSerNomImpression/interpretation of studyPoint 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 20666-4 | HealthAssure