LOINCActiveBoth

LOINC Code 31891-5: MuV Ag Ql (Vag fld)

31891-5 is a LOINC code used to identify MuV Ag Ql (Vag fld) 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 Mumps virus Ag. It is commonly used with the system or sample type Vag.

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 Mumps virus Ag. It is commonly used with the system or sample type Vag.

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

  • Mumps virus Ag [Presence] in Vaginal fluid
  • Mumps virus Ag
  • Antigen; Antigens; Genital vaginal; Gyn; Gynecology; ID; Infectious Disease; InfectiousDisease; Microbiology; MuV; OB; ObGyn; Obstetrics; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Screen; Vag fld; Vag fluid; Vagina; Vaginal fluid

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

MuV Ag Ql (Vag fld)Mumps virus Ag [Presence] in Vaginal fluidMuV Ag Vag QlMumps virus AgMICROMumps virus antigen, Vaginal fluidPrThr

Frequently asked questions

Code details

Code31891-5
SystemLOINC
Display nameMuV Ag Ql (Vag fld)
DescriptionMumps virus Ag
Short nameMuV Ag Vag Ql
ComponentMumps virus Ag
PropertyPrThr
TimingPt
System (specimen)Vag
ScaleOrd
ClassMICRO
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.07
Last changed2.56

Consumer names

Mumps virus antigen, Vaginal fluid

Part names

Mumps virus AgPrThrPtVagOrdPresence or ThresholdPoint in time (spot)Vaginal

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 31891-5 | HealthAssure