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 40562-1: Actin muscle specific Ag Immune stain Ql (Tiss)

Name: LOINC Code 40562-1: Actin muscle specific Ag Immune stain Ql (Tiss)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:27.146Z

40562-1 is a LOINC code used to identify Actin muscle specific 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 Actin.muscle specific 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 Actin.muscle specific 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

Actin muscle specific Ag [Presence] in Tissue by Immune stain
Actin.muscle specific Ag
Antigen; Antigens; IHC; Imm; Immunohistochemical stain; Immunostain; ImStn; Imun; Imune; MuSA; Musc; Muscl; Ordinal; PATHOLOGY; Point in time; PR; QL; Qual; Qualitative; Random; Screen; Spec; St; Stains; Stn; 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

Actin muscle specific Ag Immune stain Ql (Tiss)Actin muscle specific Ag [Presence] in Tissue by Immune stainMuSA Ag Tiss Ql ImStnActin.muscle specific AgPATHActin muscle specific antigen, TissuePrThr

Frequently asked questions

Code details

Code40562-1

SystemLOINC

Display nameActin muscle specific Ag Immune stain Ql (Tiss)

DescriptionActin.muscle specific Ag

Short nameMuSA Ag Tiss Ql ImStn

ComponentActin.muscle specific Ag

PropertyPrThr

TimingPt

System (specimen)Tiss

ScaleOrd

MethodImmune stain

ClassPATH

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.15

Last changed2.56

Consumer names

Actin muscle specific antigen, Tissue

Part names

Actin.muscle specific AgPrThrPtTissOrdImmune stainActin muscle specific AgPresence 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.