What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActiveBoth

LOINC Code 49713-1: Parainfluenza virus Ab CF (S) [Titer]

Name: LOINC Code 49713-1: Parainfluenza virus Ab CF (S) [Titer]
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

49713-1 is a LOINC code used to identify Parainfluenza virus 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 Parainfluenza 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 Parainfluenza 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: ACTIVE
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

Parainfluenza virus Ab [Titer] in Serum by Complement fixation
Parainfluenza virus Ab
ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; CF; Comp fixation; Compfix; Complement fixation; Dilution factor; Dilution Factor (Titer); HPIV; ID; Infectious Disease; InfectiousDisease; Microbiology; Para; Parainflu; Point in time; Random; 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.

Related SNOMED CT concepts

705114005SNOMED CT mapping for Parainfluenza virus Ab CF (S) [Titer] (49713-1)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

Parainfluenza virus Ab CF (S) [Titer]Parainfluenza virus Ab [Titer] in Serum by Complement fixationHPIV Ab Titr Ser CFParainfluenza virus AbMICROParainfluenza virus antibody, BloodTitr

Frequently asked questions

Code details

Code49713-1

SystemLOINC

Display nameParainfluenza virus Ab CF (S) [Titer]

DescriptionParainfluenza virus Ab

Short nameHPIV Ab Titr Ser CF

ComponentParainfluenza virus Ab

PropertyTitr

TimingPt

System (specimen)Ser

ScaleSemiQn

MethodComp fix

ClassMICRO

Example unitstiter

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.22

Last changed2.75

Consumer names

Parainfluenza virus antibody, Blood

Part names

Parainfluenza virus AbTitrPtSerSemiQnComp 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.