LOINCActiveBoth

LOINC Code 44512-2: HSV Ag Ql (Nose)

44512-2 is a LOINC code used to identify HSV Ag Ql (Nose) 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 Ag. It is commonly used with the system or sample type Nose.

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

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 Ag [Presence] in Nose
  • Herpes simplex virus Ag
  • Antigen; Antigens; Herp splx; HSV; ID; Infectious Disease; InfectiousDisease; Microbiology; Nasal; Nos; Nose (nasal passage); Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Screen; Smell

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 Ag Ql (Nose)Herpes simplex virus Ag [Presence] in NoseHSV Ag Nose QlHerpes simplex virus AgMICROHerpes simplex virus (HSV) antigen, NosePrThr

Frequently asked questions

Code details

Code44512-2
SystemLOINC
Display nameHSV Ag Ql (Nose)
DescriptionHerpes simplex virus Ag
Short nameHSV Ag Nose Ql
ComponentHerpes simplex virus Ag
PropertyPrThr
TimingPt
System (specimen)Nose
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 (HSV) antigen, Nose

Part names

Herpes simplex virus AgPrThrPtNoseOrdPresence or ThresholdPoint in time (spot)

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 44512-2 | HealthAssure