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 71699-3: Flavivirus Ag Immune stain Ql (Specimen)

Name: LOINC Code 71699-3: Flavivirus Ag Immune stain Ql (Specimen)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:50.624Z

71699-3 is a LOINC code used to identify Flavivirus Ag Immune stain Ql (Specimen) 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 Flavivirus Ag. It is commonly used with the system or sample type XXX.

Reviewed by HealthAssure Clinical TeamUpdated 21 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 Flavivirus Ag. It is commonly used with the system or sample type XXX.

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: Immune stain

What it does not mean

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

Key facts

Flavivirus Ag [Presence] in Specimen by Immune stain
Flavivirus Ag
Antigen; Antigens; Flavi virus; ID; IHC; Imm; Immunohistochemical stain; Immunostain; ImStn; Imun; Imune; Infectious Disease; InfectiousDisease; Microbiology; Misc; Miscellaneous; Ordinal; Other; Point in time; PR; QL; Qual; Qualitative; Random; Screen; Spec; St; Stains; Stn; To be specified in another part of the message; Unspecified

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

Flavivirus Ag Immune stain Ql (Specimen)Flavivirus Ag [Presence] in Specimen by Immune stainFlavivirus Ag Spec Ql ImStnFlavivirus AgMICROFlavivirus antigen, SpecimenPrThr

Frequently asked questions

Code details

Code71699-3

SystemLOINC

Display nameFlavivirus Ag Immune stain Ql (Specimen)

DescriptionFlavivirus Ag

Short nameFlavivirus Ag Spec Ql ImStn

ComponentFlavivirus Ag

PropertyPrThr

TimingPt

System (specimen)XXX

ScaleOrd

MethodImmune stain

ClassMICRO

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.40

Last changed2.69

Consumer names

Flavivirus antigen, Specimen

Part names

Flavivirus AgPrThrPtXXXOrdImmune stainPresence or ThresholdPoint in time (spot)

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.