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 5098-9: Cold agglutinin Aggl [Titer]

Name: LOINC Code 5098-9: Cold agglutinin Aggl [Titer]
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

5098-9 is a LOINC code used to identify Cold agglutinin Aggl [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 Cold agglutinin. It is commonly used with the system or sample type Ser/Plas.

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 Cold agglutinin. It is commonly used with the system or sample type Ser/Plas.

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: Aggl

What it does not mean

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

Key facts

Cold agglutinin [Titer] in Serum or Plasma by Agglutination
Cold agglutinin
Agg; Agglut; Agglutination; Agglutinins; Agglutins; AGT; CA; Cold agglutinin titration; Dilution factor; Dilution Factor (Titer); Pl; Plasma; Plsm; Point in time; Random; Serology; SerP; SerPl; SerPlas; Serum; Serum or plasma; SmQn; SR; Titer; Titered; Titre; Ttr; UniversalLabOrders

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 Cold agglutinin Aggl [Titer] (5098-9)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

Cold agglutinin Aggl [Titer]Cold agglutinin [Titer] in Serum or Plasma by AgglutinationCA Titr SerPl AgglCold agglutininSEROCold Agglutinin, BloodTitr

Frequently asked questions

Code details

Code5098-9

SystemLOINC

Display nameCold agglutinin Aggl [Titer]

DescriptionCold agglutinin

Short nameCA Titr SerPl Aggl

ComponentCold agglutinin

PropertyTitr

TimingPt

System (specimen)Ser/Plas

ScaleSemiQn

MethodAggl

ClassSERO

Example unitstiter

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0

Last changed2.75

Consumer names

Cold Agglutinin, Blood

Part names

Cold agglutininTitrPtSer/PlasSemiQnAgglTiterPoint in time (spot)Serum or PlasmaAgglutination

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.