LOINCBoth

LOINC Code 5294-4: RSV Ab CF (S) [Titer]

5294-4 is a LOINC code used to identify RSV Ab CF (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. 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. 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: DISCOURAGED
  • Order vs observation: Both
  • Method: Comp fix

What it does not mean

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

Key facts

  • Respiratory syncytial virus Ab [Titer] in Serum by Complement fixation
  • Respiratory syncytial virus Ab
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; CF; Comp fixation; Compfix; Complement fixation; Dilution factor; Dilution Factor (Titer); HRSV; ID; Infectious Disease; InfectiousDisease; Microbiology; Point in time; QNT; Quan; Quant; Quantitative; Random; RSV; Serum; 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 Ab CF (S) [Titer]Respiratory syncytial virus Ab [Titer] in Serum by Complement fixationRSV Ab Titr Ser CFRespiratory syncytial virus AbMICRORespiratory syncytial virus (RSV) antibody, BloodTitr

Frequently asked questions

Code details

Code5294-4
SystemLOINC
Display nameRSV Ab CF (S) [Titer]
DescriptionRespiratory syncytial virus Ab
Short nameRSV Ab Titr Ser CF
ComponentRespiratory syncytial virus Ab
PropertyTitr
TimingPt
System (specimen)Ser
ScaleQn
MethodComp fix
ClassMICRO
Example unitstiter
StatusDISCOURAGED
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0
Last changed2.73

Consumer names

Respiratory syncytial virus (RSV) antibody, Blood

Part names

Respiratory syncytial virus AbTitrPtSerQnComp fixTiterPoint in time (spot)SerumComplement fixation

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 5294-4 | HealthAssure