LOINCActiveObservation

LOINC Code 18572-8: ST amplitude.J point+80 ms Lead II

18572-8 is a LOINC code used to identify ST amplitude.J point+80 ms Lead II 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 ST amplitude.J point+80 ms. It is commonly used with the system or sample type Lead II.

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 ST amplitude.J point+80 ms. It is commonly used with the system or sample type Lead II.

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: Observation
  • Method: EKG

What it does not mean

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

Key facts

  • ST amplitude.J point+80 ms Lead II
  • ST amplitude.J point+80 ms
  • Added to accommodate measures defined in CEN/TC251/PT007, SCP-ECG (Standard Communications Protocol for Computerized Electrocardiography)
  • 2; Cardio; Cardiology; ECG; EKG.MEASUREMENTS; Electrical potential; Electrocardiogram; Electrocardiograph; Heart Disease; J Pnt ST Amp+80ms; L-II; Point in time; QNT; Quan; Quant; Quantitative; Random; Voltage

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

ST amplitude.J point+80 ms Lead IIJ Pnt ST Amp+80ms L-IIST amplitude.J point+80 msEKG.MEASElpotPtLead II

Frequently asked questions

Code details

Code18572-8
SystemLOINC
Display nameST amplitude.J point+80 ms Lead II
DescriptionST amplitude.J point+80 ms
Short nameJ Pnt ST Amp+80ms L-II
ComponentST amplitude.J point+80 ms
PropertyElpot
TimingPt
System (specimen)Lead II
ScaleQn
MethodEKG
ClassEKG.MEAS
Example unitsmV
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0l
Last changed2.48

Part names

ST amplitude.J point+80 msElpotPtLead IIQnEKGElectrical Potential (Voltage)Point in time (spot)Electrocardiogram (EKG)

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 18572-8 | HealthAssure