What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActiveBoth

LOINC Code 6738-9: Yellow Dock IgE Qn (S)

Name: LOINC Code 6738-9: Yellow Dock IgE Qn (S)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:46.821Z

6738-9 is a LOINC code used to identify Yellow Dock 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 Rumex crispus 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 Rumex crispus 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: Both

What it does not mean

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

Key facts

Yellow Dock IgE Ab [Units/volume] in Serum
Rumex crispus 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; w23; Yellow dock; Yellow dockweed

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

Yellow Dock IgE Qn (S)Yellow Dock IgE Ab [Units/volume] in SerumYellow Dock IgE QnRumex crispus Ab.IgEALLERGYYellow dock allergy testACnc

Frequently asked questions

Code details

Code6738-9

SystemLOINC

Display nameYellow Dock IgE Qn (S)

DescriptionRumex crispus Ab.IgE

Short nameYellow Dock IgE Qn

ComponentRumex crispus Ab.IgE

PropertyACnc

TimingPt

System (specimen)Ser

ScaleQn

ClassALLERGY

Example unitskIU/L

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0h(2)

Last changed2.73

Consumer names

Yellow dock allergy test

Part names

Rumex crispus Ab.IgEACncPtSerQnYellow Dockweed (Rumex crispus) IgEArbitrary 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.