LOINCActiveBoth

LOINC Code 44501-5: HSV 2 Ag Ql (Throat)

44501-5 is a LOINC code used to identify HSV 2 Ag Ql (Throat) 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 2 Ag. It is commonly used with the system or sample type Thrt.

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 2 Ag. It is commonly used with the system or sample type Thrt.

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

  • Herpes simplex virus 2 Ag [Presence] in Throat
  • Herpes simplex virus 2 Ag
  • Antigen; Antigens; Herp splx; Herpes simplex virus type 2; Herpes simplex virus type II; HSV; HSV2; ID; II; Infectious Disease; InfectiousDisease; Microbiology; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Screen; Throat; Upper respiratory

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

HSV 2 Ag Ql (Throat)Herpes simplex virus 2 Ag [Presence] in ThroatHSV2 Ag Throat QlHerpes simplex virus 2 AgMICROHerpes simplex virus 2 (HSV 2) antigen, ThroatPrThr

Frequently asked questions

Code details

Code44501-5
SystemLOINC
Display nameHSV 2 Ag Ql (Throat)
DescriptionHerpes simplex virus 2 Ag
Short nameHSV2 Ag Throat Ql
ComponentHerpes simplex virus 2 Ag
PropertyPrThr
TimingPt
System (specimen)Thrt
ScaleOrd
ClassMICRO
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.17
Last changed2.56

Consumer names

Herpes simplex virus 2 (HSV 2) antigen, Throat

Part names

Herpes simplex virus 2 AgPrThrPtThrtOrdPresence or ThresholdPoint in time (spot)Throat

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 44501-5 | HealthAssure