LOINCActiveBoth

LOINC Code 22613-4: WEEV IgG (CSF) [Titer]

22613-4 is a LOINC code used to identify WEEV IgG (CSF) [Titer] 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 Western equine encephalitis virus Ab.IgG. 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 Western equine encephalitis virus Ab.IgG. 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

  • Western equine encephalitis virus IgG Ab [Titer] in Cerebral spinal fluid
  • Western equine encephalitis virus Ab.IgG
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; Cerebral spinal fluid; Cerebrospinal Fl; Dilution factor; Dilution Factor (Titer); Enc; Enceph; Encephalomyelitis; Equin; ID; Immune globulin G; Immunoglobulin G; Infectious Disease; InfectiousDisease; Microbiology; Neuro; Neurology; Point in time; Random; SmQn; Spinal Fl; Spinal Fld; Spinal Flu; Spinal Fluid; Titer; Titered; Titre; Togavirus; Ttr; WEE virus; WEEV; West

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

WEEV IgG (CSF) [Titer]Western equine encephalitis virus IgG Ab [Titer] in Cerebral spinal fluidWEEV IgG Titr CSFWestern equine encephalitis virus Ab.IgGMICROWEEV IgG antibody, Spinal fluidTitr

Frequently asked questions

Code details

Code22613-4
SystemLOINC
Display nameWEEV IgG (CSF) [Titer]
DescriptionWestern equine encephalitis virus Ab.IgG
Short nameWEEV IgG Titr CSF
ComponentWestern equine encephalitis virus Ab.IgG
PropertyTitr
TimingPt
System (specimen)CSF
ScaleSemiQn
ClassMICRO
Example unitstiter
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0n
Last changed2.75

Consumer names

WEEV IgG antibody, Spinal fluid

Part names

Western equine encephalitis virus Ab.IgGTitrPtCSFSemiQnWestern equine encephalitis virus IgGTiterPoint 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 22613-4 | HealthAssure