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 16800-5: Echovirus 19 Ab CF Qn (S)

Name: LOINC Code 16800-5: Echovirus 19 Ab CF Qn (S)
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

16800-5 is a LOINC code used to identify Echovirus 19 Ab CF 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 Echovirus 19 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 19 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: Both
Method: Comp fix

What it does not mean

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

Key facts

Echovirus 19 Ab [Units/volume] in Serum by Complement fixation
Echovirus 19 Ab
ABS; Aby; Antby; Anti; Antibodies; Antibody; Arbitrary concentration; Autoantibodies; Autoantibody; CF; Comp fixation; Compfix; Complement fixation; Echo; Echo virus; Echovirus type 19; ECV; ECV19; EV; ID; Infectious Disease; InfectiousDisease; Microbiology; Point in time; QNT; Quan; Quant; Quantitative; 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.

Related SNOMED CT concepts

705114005SNOMED CT mapping for Echovirus 19 Ab CF Qn (S) (16800-5)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

Echovirus 19 Ab CF Qn (S)Echovirus 19 Ab [Units/volume] in Serum by Complement fixationECV19 Ab Ser CF-aCncEchovirus 19 AbMICROEchovirus 19 antibody, BloodACnc

Frequently asked questions

Code details

Code16800-5

SystemLOINC

Display nameEchovirus 19 Ab CF Qn (S)

DescriptionEchovirus 19 Ab

Short nameECV19 Ab Ser CF-aCnc

ComponentEchovirus 19 Ab

PropertyACnc

TimingPt

System (specimen)Ser

ScaleQn

MethodComp fix

ClassMICRO

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0l

Last changed2.69

Consumer names

Echovirus 19 antibody, Blood

Part names

Echovirus 19 AbACncPtSerQnComp fixArbitrary ConcentrationPoint in time (spot)SerumComplement fixation

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.