LOINCActiveBoth

LOINC Code 22511-0: SLEV IgG (CSF) [Titer]

22511-0 is a LOINC code used to identify SLEV IgG (CSF) [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.IgG. 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 Saint Louis encephalitis virus Ab.IgG. 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

  • Saint Louis encephalitis virus IgG Ab [Titer] in Cerebral spinal fluid
  • Saint Louis encephalitis virus Ab.IgG
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; Cerebral spinal fluid; Cerebrospinal Fl; Dilution factor; Dilution Factor (Titer); Enc; Enceph; Encephalomyelitis; ID; Immune globulin G; Immunoglobulin G; Infectious Disease; InfectiousDisease; Microbiology; Neuro; Neurology; Point in time; Random; SLE virus; SLEV; SmQn; Spinal Fl; Spinal Fld; Spinal Flu; Spinal Fluid; St Louis; Titer; Titered; Titre; 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 IgG (CSF) [Titer]Saint Louis encephalitis virus IgG Ab [Titer] in Cerebral spinal fluidSLEV IgG Titr CSFSaint Louis encephalitis virus Ab.IgGMICROSLEV IgG antibody, Spinal fluidTitr

Frequently asked questions

Code details

Code22511-0
SystemLOINC
Display nameSLEV IgG (CSF) [Titer]
DescriptionSaint Louis encephalitis virus Ab.IgG
Short nameSLEV IgG Titr CSF
ComponentSaint Louis encephalitis virus Ab.IgG
PropertyTitr
TimingPt
System (specimen)CSF
ScaleSemiQn
ClassMICRO
Example unitstiter
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

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

Consumer names

SLEV IgG antibody, Spinal fluid

Part names

Saint Louis encephalitis virus Ab.IgGTitrPtCSFSemiQnSaint Louis encephalitis virus IgGTiterPoint 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.

LOINC Code 22511-0 | HealthAssure