LOINCActiveBoth

LOINC Code 17518-2: RSV IgG (S) [Titer]

17518-2 is a LOINC code used to identify RSV IgG (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 Respiratory syncytial virus Ab.IgG. It is commonly used with the system or sample type Ser.

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 Respiratory syncytial virus Ab.IgG. 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

What it does not mean

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

Key facts

  • Respiratory syncytial virus IgG Ab [Titer] in Serum
  • Respiratory syncytial virus Ab.IgG
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; Dilution factor; Dilution Factor (Titer); HRSV; ID; Immune globulin G; Immunoglobulin G; Infectious Disease; InfectiousDisease; Microbiology; Point in time; Random; RSV; Serum; SmQn; SR; 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

RSV IgG (S) [Titer]Respiratory syncytial virus IgG Ab [Titer] in SerumRSV IgG Titr SerRespiratory syncytial virus Ab.IgGMICRORespiratory syncytial virus (RSV) IgG antibody, BloodTitr

Frequently asked questions

Code details

Code17518-2
SystemLOINC
Display nameRSV IgG (S) [Titer]
DescriptionRespiratory syncytial virus Ab.IgG
Short nameRSV IgG Titr Ser
ComponentRespiratory syncytial virus Ab.IgG
PropertyTitr
TimingPt
System (specimen)Ser
ScaleSemiQn
ClassMICRO
Example unitstiter
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

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

Consumer names

Respiratory syncytial virus (RSV) IgG antibody, Blood

Part names

Respiratory syncytial virus Ab.IgGTitrPtSerSemiQnRespiratory syncytial virus IgGTiterPoint in time (spot)Serum

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 17518-2 | HealthAssure