LOINCActiveBoth

LOINC Code 24202-4: SLEV Ab spec 2 IF (S) [Titer]

24202-4 is a LOINC code used to identify SLEV Ab spec 2 IF (S) [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 Saint Louis encephalitis virus Ab^2nd specimen. 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 Saint Louis encephalitis virus Ab^2nd specimen. 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: Both
  • Method: IF

What it does not mean

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

Key facts

  • Saint Louis encephalitis virus Ab [Titer] in Serum by Immunofluorescence --2nd specimen
  • Saint Louis encephalitis virus Ab^2nd specimen
  • ABS; Aby; ACIF; Antby; Anti; Antibodies; Antibody; Anticomplement Immunofluorescence; Autoantibodies; Autoantibody; Convalescent; Dilution factor; Dilution Factor (Titer); Enc; Enceph; Encephalomyelitis; FA; Fluorescent antibody; Fluoresent; ID; IFA; Immune fluorescence; Immunoflour; Immunofluor; Immunofluorescence; Infectious Disease; InfectiousDisease; Microbiology; Point in time; Post immunization; Random; Second; Serum; SLE virus; SLEV; SmQn; sp2; Spec; SR; St Louis; Time Resolved Fluorescence; Titer; Titered; Titre; TRF; Ttr

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

SLEV Ab spec 2 IF (S) [Titer]Saint Louis encephalitis virus Ab [Titer] in Serum by Immunofluorescence --2nd specimenSLEV Ab sp2 Titr Ser IFSaint Louis encephalitis virus Ab^2nd specimenMICROSLEV antibody specimen 2, BloodTitr

Frequently asked questions

Code details

Code24202-4
SystemLOINC
Display nameSLEV Ab spec 2 IF (S) [Titer]
DescriptionSaint Louis encephalitis virus Ab^2nd specimen
Short nameSLEV Ab sp2 Titr Ser IF
ComponentSaint Louis encephalitis virus Ab^2nd specimen
PropertyTitr
TimingPt
System (specimen)Ser
ScaleSemiQn
MethodIF
ClassMICRO
Example unitstiter
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

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

Consumer names

SLEV antibody specimen 2, Blood

Part names

Saint Louis encephalitis virus Ab^2nd specimenTitrPtSerSemiQnIFTiterPoint in time (spot)SerumImmunofluorescence (IF)

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 24202-4 | HealthAssure