LOINCActiveObservation

LOINC Code 94602-0: West Nile virus IgM/Positive control IA (S) [Relative ratio]

94602-0 is a LOINC code used to identify West Nile virus IgM/Positive control IA (S) [Relative ratio] 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 West Nile virus Ab.IgM/Positive control. It is commonly used with the system or sample type Ser.

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 West Nile virus Ab.IgM/Positive control. It is commonly used with the system or sample type Ser.

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: Observation
  • Method: IA

What it does not mean

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

Key facts

  • West Nile virus IgM Ab/Positive control in Serum by Immunoassay
  • West Nile virus Ab.IgM/Positive control
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; EIA; ELFA; ELISA; Enzyme immunoassay; IAA; ID; Immune globulin M; Immunoglobulin M; Infectious Disease; InfectiousDisease; MEIA; Microbiology; Point in time; Pos; Pos cntrl; QNT; Quan; Quant; Quantitative; Random; Relative ratio; Serum; SR; SUDS; Vet; Veterinary; WNV

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

West Nile virus IgM/Positive control IA (S) [Relative ratio]West Nile virus IgM Ab/Positive control in Serum by ImmunoassayWNV IgM/Pos cntrl Ser IAWest Nile virus Ab.IgM/Positive controlMICROWest Nile virus/Positive Control, BloodRelRto

Frequently asked questions

Code details

Code94602-0
SystemLOINC
Display nameWest Nile virus IgM/Positive control IA (S) [Relative ratio]
DescriptionWest Nile virus Ab.IgM/Positive control
Short nameWNV IgM/Pos cntrl Ser IA
ComponentWest Nile virus Ab.IgM/Positive control
PropertyRelRto
TimingPt
System (specimen)Ser
ScaleQn
MethodIA
ClassMICRO
Example unitsratio
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.68
Last changed2.68

Consumer names

West Nile virus/Positive Control, Blood

Part names

West Nile virus Ab.IgM/Positive controlRelRtoPtSerQnIARelative RatioPoint in time (spot)SerumImmunoassay

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.