What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActiveBoth

LOINC Code 20986-6: WEEV Ab CF Ql (CSF)

Name: LOINC Code 20986-6: WEEV Ab CF Ql (CSF)
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

20986-6 is a LOINC code used to identify WEEV Ab CF 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 Western equine encephalitis virus Ab. 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. 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
Method: Comp fix

What it does not mean

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

Key facts

Western equine encephalitis virus Ab [Presence] in Cerebral spinal fluid by Complement fixation
Western equine encephalitis virus Ab
ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; Cerebral spinal fluid; Cerebrospinal Fl; CF; Comp fixation; Compfix; Complement fixation; Enc; Enceph; Encephalomyelitis; Equin; ID; Infectious Disease; InfectiousDisease; Microbiology; Neuro; Neurology; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Screen; Spinal Fl; Spinal Fld; Spinal Flu; Spinal Fluid; Togavirus; 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.

Related SNOMED CT concepts

705114005SNOMED CT mapping for WEEV Ab CF Ql (CSF) (20986-6)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

WEEV Ab CF Ql (CSF)Western equine encephalitis virus Ab [Presence] in Cerebral spinal fluid by Complement fixationWEEV Ab CSF Ql CFWestern equine encephalitis virus AbMICROWEEV antibody, Spinal fluidPrThr

Frequently asked questions

Code details

Code20986-6

SystemLOINC

Display nameWEEV Ab CF Ql (CSF)

DescriptionWestern equine encephalitis virus Ab

Short nameWEEV Ab CSF Ql CF

ComponentWestern equine encephalitis virus Ab

PropertyPrThr

TimingPt

System (specimen)CSF

ScaleOrd

MethodComp fix

ClassMICRO

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0m

Last changed2.56

Consumer names

WEEV antibody, Spinal fluid

Part names

Western equine encephalitis virus AbPrThrPtCSFOrdComp fixPresence or ThresholdPoint in time (spot)Cerebral spinal fluidComplement fixation

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.