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 5203-5: HSV Ab LA Qn (S)

Name: LOINC Code 5203-5: HSV Ab LA Qn (S)
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

5203-5 is a LOINC code used to identify HSV Ab LA 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 Herpes simplex virus 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 Herpes simplex virus 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: LA

What it does not mean

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

Key facts

Herpes simplex virus Ab [Units/volume] in Serum by Latex agglutination
Herpes simplex virus Ab
ABS; Aby; Antby; Anti; Antibodies; Antibody; Arbitrary concentration; Autoantibodies; Autoantibody; Herp splx; HSV; ID; Infectious Disease; InfectiousDisease; LAT; Latex agglutination; 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 HSV Ab LA Qn (S) (5203-5)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

HSV Ab LA Qn (S)Herpes simplex virus Ab [Units/volume] in Serum by Latex agglutinationHSV Ab Ser LA-aCncHerpes simplex virus AbMICROHerpes simplex virus (HSV) antibody, BloodACnc

Frequently asked questions

Code details

Code5203-5

SystemLOINC

Display nameHSV Ab LA Qn (S)

DescriptionHerpes simplex virus Ab

Short nameHSV Ab Ser LA-aCnc

ComponentHerpes simplex virus Ab

PropertyACnc

TimingPt

System (specimen)Ser

ScaleQn

MethodLA

ClassMICRO

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0

Last changed2.69

Consumer names

Herpes simplex virus (HSV) antibody, Blood

Part names

Herpes simplex virus AbACncPtSerQnLAArbitrary ConcentrationPoint in time (spot)SerumLatex agglutination

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.