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 7653-9: Short+Giant Ragweed IgG Qn (S)

Name: LOINC Code 7653-9: Short+Giant Ragweed IgG Qn (S)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:56.389Z

7653-9 is a LOINC code used to identify Short+Giant Ragweed IgG 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 Ambrosia elatior+Ambrosia trifida Ab.IgG. 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 Ambrosia elatior+Ambrosia trifida Ab.IgG. 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

Short+Giant Ragweed IgG Ab [Units/volume] in Serum
Ambrosia elatior+Ambrosia trifida Ab.IgG
A artemisiifolia; A elatior; ABS; Aby; Allergen; Allergens; ALLERGY TESTING; Ambrosia artemisiifolia; Antby; Anti; Antibodies; Antibody; Arbitrary concentration; Autoantibodies; Autoantibody; Common ragweed; Giant Ragweed; Immune globulin G; Immunoglobulin G; Point in time; QNT; Quan; Quant; Quantitative; Random; Serum; Short ragweed; Short+Giant Ragweed; SR; w001; w003; w1; w3

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

Short+Giant Ragweed IgG Qn (S)Short+Giant Ragweed IgG Ab [Units/volume] in SerumShort+Giant Ragweed IgG QnAmbrosia elatior+Ambrosia trifida Ab.IgGALLERGYShort+Giant ragweed IgG antibodyACnc

Frequently asked questions

Code details

Code7653-9

SystemLOINC

Display nameShort+Giant Ragweed IgG Qn (S)

DescriptionAmbrosia elatior+Ambrosia trifida Ab.IgG

Short nameShort+Giant Ragweed IgG Qn

ComponentAmbrosia elatior+Ambrosia trifida Ab.IgG

PropertyACnc

TimingPt

System (specimen)Ser

ScaleQn

ClassALLERGY

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0h(2)

Last changed2.69

Consumer names

Short+Giant ragweed IgG antibody

Part names

Ambrosia elatior+Ambrosia trifida Ab.IgGACncPtSerQnShort+Giant Ragweed (Ambrosia elatior+A trifida) IgGArbitrary 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.