LOINCActiveBoth

LOINC Code 20720-9: B. abortus Ab Serial ring agglutination Ql (Milk)

20720-9 is a LOINC code used to identify B. abortus Ab Serial ring agglutination Ql (Milk) 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 Brucella abortus Ab. It is commonly used with the system or sample type Milk.

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 Brucella abortus Ab. It is commonly used with the system or sample type Milk.

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.serial ring test

What it does not mean

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

Key facts

  • Brucella abortus Ab [Presence] in Milk by Serial ring agglutination
  • Brucella abortus Ab
  • Ring test is used to identify antibodies in milk or whey.
  • Abort; ABS; Aby; Agg; Agglut; Agglutination; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; B abortus; Bangs disease; Bovine brucellosis; BRT; Bruc; Brucellosis; Contagious abortion; ID; Infectious Disease; InfectiousDisease; Microbiology; Mlk; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Screen; Ser ring aggl; Undulant fever; Vet; Veterinary

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

B. abortus Ab Serial ring agglutination Ql (Milk)Brucella abortus Ab [Presence] in Milk by Serial ring agglutinationB abortus Ab Mlk Ql Ser ring agglBrucella abortus AbMICROBrucella abortus antibody, MilkPrThr

Frequently asked questions

Code details

Code20720-9
SystemLOINC
Display nameB. abortus Ab Serial ring agglutination Ql (Milk)
DescriptionBrucella abortus Ab
Short nameB abortus Ab Mlk Ql Ser ring aggl
ComponentBrucella abortus Ab
PropertyPrThr
TimingPt
System (specimen)Milk
ScaleOrd
MethodAggl.serial ring test
ClassMICRO
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0m
Last changed2.67

Consumer names

Brucella abortus antibody, Milk

Part names

Brucella abortus AbPrThrPtMilkOrdAggl.serial ring testPresence or ThresholdPoint in time (spot)Serial ring 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.

LOINC Code 20720-9 | HealthAssure