LOINCActiveBoth

LOINC Code 30901-3: Cold agglutinin Cord RBC agglutination [Titer]

30901-3 is a LOINC code used to identify Cold agglutinin Cord RBC agglutination [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 21 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.cord RBC

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 Cord RBC agglutination
  • Cold agglutinin
  • using Cord blood red cells V Patient serum at 4 degrees C
  • Agg; Agglut; Agglutination; Agglutinins; Agglutins; AGT; CA; Cold agglutinin titration; Cord RBC Aggl; 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

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

Cold agglutinin Cord RBC agglutination [Titer]Cold agglutinin [Titer] in Serum or Plasma by Cord RBC agglutinationCA Titr SerPl Cord RBC AgglCold agglutininSEROCold Agglutinin, BloodTitr

Frequently asked questions

Code details

Code30901-3
SystemLOINC
Display nameCold agglutinin Cord RBC agglutination [Titer]
DescriptionCold agglutinin
Short nameCA Titr SerPl Cord RBC Aggl
ComponentCold agglutinin
PropertyTitr
TimingPt
System (specimen)Ser/Plas
ScaleSemiQn
MethodAggl.cord RBC
ClassSERO
Example unitstiter
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.04
Last changed2.75

Consumer names

Cold Agglutinin, Blood

Part names

Cold agglutininTitrPtSer/PlasSemiQnAggl.cord RBCTiterPoint in time (spot)Serum or PlasmaCord RBC agglutination

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.