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 41239-5: Yellow fever virus Ab Ql (CSF)

Name: LOINC Code 41239-5: Yellow fever virus Ab Ql (CSF)
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

41239-5 is a LOINC code used to identify Yellow fever virus Ab 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 Yellow fever 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 Yellow fever 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

What it does not mean

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

Key facts

Yellow fever virus Ab [Presence] in Cerebral spinal fluid
Yellow fever virus Ab
ABS; Aby; American plague; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; Cerebral spinal fluid; Cerebrospinal Fl; 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; yellow jack; YFV

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 Yellow fever virus Ab Ql (CSF) (41239-5)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

Yellow fever virus Ab Ql (CSF)Yellow fever virus Ab [Presence] in Cerebral spinal fluidYFV Ab CSF QlYellow fever virus AbMICROYellow Fever virus antibody, Spinal fluidPrThr

Frequently asked questions

Code details

Code41239-5

SystemLOINC

Display nameYellow fever virus Ab Ql (CSF)

DescriptionYellow fever virus Ab

Short nameYFV Ab CSF Ql

ComponentYellow fever virus Ab

PropertyPrThr

TimingPt

System (specimen)CSF

ScaleOrd

ClassMICRO

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.15

Last changed2.56

Consumer names

Yellow Fever virus antibody, Spinal fluid

Part names

Yellow fever virus AbPrThrPtCSFOrdPresence 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.