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.

LOINCActiveObservation

LOINC Code 57582-9: Aldosterone pre 25 mg captopril PO [Mass/Vol]

Name: LOINC Code 57582-9: Aldosterone pre 25 mg captopril PO [Mass/Vol]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:38.757Z

57582-9 is a LOINC code used to identify Aldosterone pre 25 mg captopril PO [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 Aldosterone^pre 25 mg captopril PO. It is commonly used with the system or sample type Ser/Plas.

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 Aldosterone^pre 25 mg captopril PO. It is commonly used with the system or sample type Ser/Plas.

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

What it does not mean

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

Key facts

Aldosterone [Mass/volume] in Serum or Plasma --pre 25 mg captopril PO
Aldosterone^pre 25 mg captopril PO
Before; c246; CHEMISTRY.CHALLENGE TESTING; Endocrine; Endocrinology; Level; Mass concentration; Pl; Plasma; Plsm; Point in time; pre 25 mg Cpl PO; QNT; Quan; Quant; Quantitative; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR

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

Aldosterone pre 25 mg captopril PO [Mass/Vol]Aldosterone [Mass/volume] in Serum or Plasma --pre 25 mg captopril POAldost pre 25 mg Cpl PO SerPl-mCncAldosterone^pre 25 mg captopril POCHALAldosterone before 25 mg Captopril by mouth, BloodMCnc

Frequently asked questions

Code details

Code57582-9

SystemLOINC

Display nameAldosterone pre 25 mg captopril PO [Mass/Vol]

DescriptionAldosterone^pre 25 mg captopril PO

Short nameAldost pre 25 mg Cpl PO SerPl-mCnc

ComponentAldosterone^pre 25 mg captopril PO

PropertyMCnc

TimingPt

System (specimen)Ser/Plas

ScaleQn

ClassCHAL

Example unitspg/mL

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.29

Last changed2.70

Consumer names

Aldosterone before 25 mg Captopril by mouth, Blood

Part names

Aldosterone^pre 25 mg captopril POMCncPtSer/PlasQnMass ConcentrationPoint in time (spot)Serum or Plasma

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.