LOINCActiveObservation

LOINC Code 104859-4: Thallium IgE Qn (S)

104859-4 is a LOINC code used to identify Thallium IgE 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 Thallium Ab.IgE. 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 Thallium Ab.IgE. 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

What it does not mean

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

Key facts

  • Thallium IgE Ab [Units/volume] in Serum
  • Thallium Ab.IgE
  • ABS; Aby; Allergen; Allergens; ALLERGY TESTING; Antby; Anti; Antibodies; Antibody; Arbitrary concentration; Autoantibodies; Autoantibody; Immune globulin E; Immunoglobulin E; Point in time; QNT; Quan; Quant; Quantitative; Random; Serum; SR; TL

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

Thallium IgE Qn (S)Thallium IgE Ab [Units/volume] in SerumThallium IgE QnThallium Ab.IgEALLERGYThallium allergy testACnc

Frequently asked questions

Code details

Code104859-4
SystemLOINC
Display nameThallium IgE Qn (S)
DescriptionThallium Ab.IgE
Short nameThallium IgE Qn
ComponentThallium Ab.IgE
PropertyACnc
TimingPt
System (specimen)Ser
ScaleQn
ClassALLERGY
Example unitskIU/L
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.78
Last changed2.78

Consumer names

Thallium allergy test

Part names

Thallium Ab.IgEACncPtSerQnArbitrary ConcentrationPoint in time (spot)Serum

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 104859-4 | HealthAssure