LOINCActiveBoth

LOINC Code 31979-8: T. evansi Ag Ql (Bld)

31979-8 is a LOINC code used to identify T. evansi Ag Ql (Bld) 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 Trypanosoma evansi Ag. It is commonly used with the system or sample type Bld.

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 Trypanosoma evansi Ag. It is commonly used with the system or sample type Bld.

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

What it does not mean

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

Key facts

  • Trypanosoma evansi Ag [Presence] in Blood
  • Trypanosoma evansi Ag
  • Antigen; Antigens; Blood; Derrengadera; ID; Infectious Disease; InfectiousDisease; Microbiology; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Screen; Surra; T evansi; Trypanosomiasis; Trypanosomosis; Vet; Veterinary; WB; Whole blood

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

T. evansi Ag Ql (Bld)Trypanosoma evansi Ag [Presence] in BloodT evansi Ag Bld QlTrypanosoma evansi AgMICROTrypanosoma evansi antigen, BloodPrThr

Frequently asked questions

Code details

Code31979-8
SystemLOINC
Display nameT. evansi Ag Ql (Bld)
DescriptionTrypanosoma evansi Ag
Short nameT evansi Ag Bld Ql
ComponentTrypanosoma evansi Ag
PropertyPrThr
TimingPt
System (specimen)Bld
ScaleOrd
ClassMICRO
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.07
Last changed2.56

Consumer names

Trypanosoma evansi antigen, Blood

Part names

Trypanosoma evansi AgPrThrPtBldOrdPresence or ThresholdPoint in time (spot)Blood

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 31979-8 | HealthAssure