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 51537-9: Silver Birch IgG Ql (S)

Name: LOINC Code 51537-9: Silver Birch IgG Ql (S)
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

51537-9 is a LOINC code used to identify Silver Birch IgG Ql (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 Betula verrucosa Ab.IgG. It is commonly used with the system or sample type Ser.

Reviewed by HealthAssure Clinical TeamUpdated 25 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 Betula verrucosa 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

Silver Birch IgG Ab [Presence] in Serum
Betula verrucosa Ab.IgG
ABS; Aby; Allergen; Allergens; ALLERGY TESTING; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; Common silver birch; Gt3; IFR; Immune globulin G; Immunoglobulin G; Isoflavone reductase; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Screen; Serum; Silver Birch; SR; t3

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.

Related SNOMED CT concepts

705114005SNOMED CT mapping for Silver Birch IgG Ql (S) (51537-9)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

Silver Birch IgG Ql (S)Silver Birch IgG Ab [Presence] in SerumSilver Birch IgG QlBetula verrucosa Ab.IgGALLERGYSilver birch IgG antibodyPrThr

Frequently asked questions

Code details

Code51537-9

SystemLOINC

Display nameSilver Birch IgG Ql (S)

DescriptionBetula verrucosa Ab.IgG

Short nameSilver Birch IgG Ql

ComponentBetula verrucosa Ab.IgG

PropertyPrThr

TimingPt

System (specimen)Ser

ScaleOrd

ClassALLERGY

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.24

Last changed2.56

Consumer names

Silver birch IgG antibody

Part names

Betula verrucosa Ab.IgGPrThrPtSerOrdSilver Birch (Betula verrucosa) IgGPresence or ThresholdPoint 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.