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 100819-2: Renin 2nd specimen post Unsp challenge (P) [Mass/Vol]

Name: LOINC Code 100819-2: Renin 2nd specimen post Unsp challenge (P) [Mass/Vol]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:16.533Z

100819-2 is a LOINC code used to identify Renin 2nd specimen post Unsp challenge (P) [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 Renin^2nd specimen post XXX challenge. It is commonly used with the system or sample type 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 Renin^2nd specimen post XXX challenge. It is commonly used with the system or sample type 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: Both

What it does not mean

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

Key facts

Renin [Mass/volume] in Plasma --2nd specimen post XXX challenge
Renin^2nd specimen post XXX challenge
After; Angiotensin forming enzyme; Angiotensinogenase; CHEMISTRY.CHALLENGE TESTING; Convalescent; Direct renin; DRC; Level; Mass concentration; p chal; Pl; Plasma; Plsm; Point in time; Post immunization; PST; QNT; Quan; Quant; Quantitative; Random; Second; sp2; sp2 p chal; Spec

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

Renin 2nd specimen post Unsp challenge (P) [Mass/Vol]Renin [Mass/volume] in Plasma --2nd specimen post XXX challengeRenin sp2 p chal Plas-mCncRenin^2nd specimen post XXX challengeCHALRenin 2nd specimen after challenge, BloodMCnc

Frequently asked questions

Code details

Code100819-2

SystemLOINC

Display nameRenin 2nd specimen post Unsp challenge (P) [Mass/Vol]

DescriptionRenin^2nd specimen post XXX challenge

Short nameRenin sp2 p chal Plas-mCnc

ComponentRenin^2nd specimen post XXX challenge

PropertyMCnc

TimingPt

System (specimen)Plas

ScaleQn

ClassCHAL

Example unitspg/mL

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.73

Last changed2.73

Consumer names

Renin 2nd specimen after challenge, Blood

Part names

Renin^2nd specimen post XXX challengeMCncPtPlasQnMass ConcentrationPoint in time (spot)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.