LOINCActiveBoth

LOINC Code 72382-5: HER2 Ag IA Qn (Tiss)

72382-5 is a LOINC code used to identify HER2 Ag IA Qn (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 HER2 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 HER2 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: IA

What it does not mean

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

Key facts

  • HER2 Ag [Units/volume] in Tissue by Immunoassay
  • HER2 Ag
  • Antigen; Antigens; Arbitrary concentration; C-ERBB-2; EIA; ELFA; ELISA; Enzyme immunoassay; erb; ERB2; ERB-2; erbB2; HER-2; HER-2/neu; IAA; MEIA; Pathology; Point in time; QNT; Quan; Quant; Quantitative; Random; SUDS; 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

HER2 Ag IA Qn (Tiss)HER2 Ag [Units/volume] in Tissue by ImmunoassayHer2 Ag Tiss IA-aCncHER2 AgPATHHER2 antigen, TissueACnc

Frequently asked questions

Code details

Code72382-5
SystemLOINC
Display nameHER2 Ag IA Qn (Tiss)
DescriptionHER2 Ag
Short nameHer2 Ag Tiss IA-aCnc
ComponentHER2 Ag
PropertyACnc
TimingPt
System (specimen)Tiss
ScaleQn
MethodIA
ClassPATH
Example unitsarb U/mL
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.42
Last changed2.82

Consumer names

HER2 antigen, Tissue

Part names

HER2 AgACncPtTissQnIAArbitrary ConcentrationPoint in time (spot)Tissue and SmearsImmunoassay

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.

LOINC Code 72382-5 | HealthAssure