LOINCActiveObservation

LOINC Code 100091-8: T. cruzi Ab IA Qn (S)

100091-8 is a LOINC code used to identify T. cruzi Ab IA Qn (S) 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 cruzi Ab. It is commonly used with the system or sample type Ser.

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 cruzi 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: Observation
  • Method: IA

What it does not mean

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

Key facts

  • Trypanosoma cruzi Ab [Units/volume] in Serum by Immunoassay
  • Trypanosoma cruzi Ab
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Arbitrary concentration; Autoantibodies; Autoantibody; Chagas disease; EIA; ELFA; ELISA; Enzyme immunoassay; IAA; MEIA; Microbiology; Point in time; QNT; Quan; Quant; Quantitative; Random; Serum; SR; SUDS; T cruzi; Trypanosomiasis; Trypanosomosis

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. cruzi Ab IA Qn (S)Trypanosoma cruzi Ab [Units/volume] in Serum by ImmunoassayT cruzi Ab Ser IA-aCncTrypanosoma cruzi AbMICROTrypanosoma cruzi antibody, BloodACnc

Frequently asked questions

Code details

Code100091-8
SystemLOINC
Display nameT. cruzi Ab IA Qn (S)
DescriptionTrypanosoma cruzi Ab
Short nameT cruzi Ab Ser IA-aCnc
ComponentTrypanosoma cruzi Ab
PropertyACnc
TimingPt
System (specimen)Ser
ScaleQn
MethodIA
ClassMICRO
Example units[arb'U]/mL
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.72
Last changed2.72

Consumer names

Trypanosoma cruzi antibody, Blood

Part names

Trypanosoma cruzi AbACncPtSerQnIAArbitrary ConcentrationPoint in time (spot)SerumImmunoassay

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 100091-8 | HealthAssure