LOINCActiveBoth

LOINC Code 31875-8: MeV Ag Ql (CSF)

31875-8 is a LOINC code used to identify MeV Ag Ql (CSF) 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 Measles virus Ag. It is commonly used with the system or sample type CSF.

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 Measles virus Ag. It is commonly used with the system or sample type CSF.

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

  • Measles virus Ag [Presence] in Cerebral spinal fluid
  • Measles virus Ag
  • Antigen; Antigens; Cerebral spinal fluid; Cerebrospinal Fl; ID; Infectious Disease; InfectiousDisease; MeV; Microbiology; Msls; Neuro; Neurology; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Rubeola; Screen; Spinal Fl; Spinal Fld; Spinal Flu; Spinal 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

MeV Ag Ql (CSF)Measles virus Ag [Presence] in Cerebral spinal fluidMeV Ag CSF QlMeasles virus AgMICROMeasles virus antigen, Spinal fluidPrThr

Frequently asked questions

Code details

Code31875-8
SystemLOINC
Display nameMeV Ag Ql (CSF)
DescriptionMeasles virus Ag
Short nameMeV Ag CSF Ql
ComponentMeasles virus Ag
PropertyPrThr
TimingPt
System (specimen)CSF
ScaleOrd
ClassMICRO
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

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

Consumer names

Measles virus antigen, Spinal fluid

Part names

Measles virus AgPrThrPtCSFOrdPresence or ThresholdPoint in time (spot)Cerebral spinal fluid

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 31875-8 | HealthAssure