LOINCActiveBoth

LOINC Code 23550-7: VEEV Ag HAI Ql (Specimen)

23550-7 is a LOINC code used to identify VEEV Ag HAI Ql (Specimen) 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 Venezuelan equine encephalitis virus Ag. It is commonly used with the system or sample type XXX.

Reviewed by HealthAssure Clinical TeamUpdated 21 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 Venezuelan equine encephalitis virus Ag. It is commonly used with the system or sample type XXX.

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: HAI

What it does not mean

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

Key facts

  • Venezuelan equine encephalitis virus Ag [Presence] in Specimen by Hemagglutination inhibition
  • Venezuelan equine encephalitis virus Ag
  • Antigen; Antigens; Enc; Enceph; Encephalomyelitis; Equin; Hemagglutination inhibition; HI; ID; Infectious Disease; InfectiousDisease; Microbiology; Misc; Miscellaneous; Ordinal; Other; Point in time; PR; QL; Qual; Qualitative; Random; Screen; Spec; To be specified in another part of the message; Togavirus; Unspecified; VEE virus; VEEV

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

VEEV Ag HAI Ql (Specimen)Venezuelan equine encephalitis virus Ag [Presence] in Specimen by Hemagglutination inhibitionVEEV Ag Spec Ql HAIVenezuelan equine encephalitis virus AgMICROVEEV antigen, SpecimenPrThr

Frequently asked questions

Code details

Code23550-7
SystemLOINC
Display nameVEEV Ag HAI Ql (Specimen)
DescriptionVenezuelan equine encephalitis virus Ag
Short nameVEEV Ag Spec Ql HAI
ComponentVenezuelan equine encephalitis virus Ag
PropertyPrThr
TimingPt
System (specimen)XXX
ScaleOrd
MethodHAI
ClassMICRO
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0n
Last changed2.69

Consumer names

VEEV antigen, Specimen

Part names

Venezuelan equine encephalitis virus AgPrThrPtXXXOrdHAIPresence or ThresholdPoint in time (spot)Hemagglutination inhibition

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 23550-7 | HealthAssure