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 102105-4: Pecan or Hickory Tree IgG IA (S) [Mass/Vol]

Name: LOINC Code 102105-4: Pecan or Hickory Tree IgG IA (S) [Mass/Vol]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:17.453Z

102105-4 is a LOINC code used to identify Pecan or Hickory Tree IgG IA (S) [Mass/Vol] 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 Carya illinoinensis tree 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 Carya illinoinensis tree 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
Method: IA

What it does not mean

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

Key facts

Pecan or Hickory Tree IgG Ab [Mass/volume] in Serum by Immunoassay
Carya illinoinensis tree Ab.IgG
ABS; Aby; Allergen; Allergens; ALLERGY TESTING; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; Carya illinoinensis IgG; Carya pecan; EIA; ELFA; ELISA; Enzyme immunoassay; Hickory; IAA; Immune globulin G; Immunoglobulin G; Level; Mass concentration; MEIA; Pecan; Pecan pollen; Pecan/Hick; Pecan/Hick Tree; Point in time; QNT; Quan; Quant; Quantitative; Random; Serum; SR; SUDS; t022; t22

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

Pecan or Hickory Tree IgG IA (S) [Mass/Vol]Pecan or Hickory Tree IgG Ab [Mass/volume] in Serum by ImmunoassayPecan/Hick Tree IgG IA-mCncCarya illinoinensis tree Ab.IgGALLERGYPecan or hickory tree IgG antibodyMCnc

Frequently asked questions

Code details

Code102105-4

SystemLOINC

Display namePecan or Hickory Tree IgG IA (S) [Mass/Vol]

DescriptionCarya illinoinensis tree Ab.IgG

Short namePecan/Hick Tree IgG IA-mCnc

ComponentCarya illinoinensis tree Ab.IgG

PropertyMCnc

TimingPt

System (specimen)Ser

ScaleQn

MethodIA

ClassALLERGY

Example unitsmcg/mL

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.75

Last changed2.75

Consumer names

Pecan or hickory tree IgG antibody

Part names

Carya illinoinensis tree Ab.IgGMCncPtSerQnIAPecan or Hickory Tree (Carya illinoinensis tree) IgGMass 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.