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 74129-8: Transforming growth factor alpha Ag Immune stain Ql (Tiss)

Name: LOINC Code 74129-8: Transforming growth factor alpha Ag Immune stain Ql (Tiss)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:53.973Z

74129-8 is a LOINC code used to identify Transforming growth factor alpha Ag Immune stain Ql (Tiss) 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 Transforming growth factor alpha Ag. It is commonly used with the system or sample type Tiss.

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 Transforming growth factor alpha Ag. It is commonly used with the system or sample type Tiss.

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: Immune stain

What it does not mean

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

Key facts

Transforming growth factor alpha Ag [Presence] in Tissue by Immune stain
Transforming growth factor alpha Ag
Alfa; Antigen; Antigens; Fac; Fact; IHC; Imm; Immunohistochemical stain; Immunostain; ImStn; Imun; Imune; Ordinal; PATHOLOGY; Point in time; PR; QL; Qual; Qualitative; Random; Screen; St; Stains; Stn; TGF-alpha; Tissue; Tissue, unspecified

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

Transforming growth factor alpha Ag Immune stain Ql (Tiss)Transforming growth factor alpha Ag [Presence] in Tissue by Immune stainTGF-alpha Ag Tiss Ql ImStnTransforming growth factor alpha AgPATHTransforming growth factor alpha antigen, TissuePrThr

Frequently asked questions

Code details

Code74129-8

SystemLOINC

Display nameTransforming growth factor alpha Ag Immune stain Ql (Tiss)

DescriptionTransforming growth factor alpha Ag

Short nameTGF-alpha Ag Tiss Ql ImStn

ComponentTransforming growth factor alpha Ag

PropertyPrThr

TimingPt

System (specimen)Tiss

ScaleOrd

MethodImmune stain

ClassPATH

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.46

Last changed2.56

Consumer names

Transforming growth factor alpha antigen, Tissue

Part names

Transforming growth factor alpha AgPrThrPtTissOrdImmune stainPresence or ThresholdPoint in time (spot)Tissue and Smears

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.