LOINCActiveBoth

LOINC Code 5723-2: Selenium (RBC) [Mass/Vol]

5723-2 is a LOINC code used to identify Selenium (RBC) [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 Selenium. It is commonly used with the system or sample type RBC.

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 Selenium. It is commonly used with the system or sample type RBC.

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

  • Selenium [Mass/volume] in Red Blood Cells
  • Selenium
  • DRUG/TOXICOLOGY; Drugs; Erythrocytes; Level; Mass concentration; Point in time; QNT; Quan; Quant; Quantitative; Random; Red blood cells; Red blood corpusles; SE

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

Selenium (RBC) [Mass/Vol]Selenium [Mass/volume] in Red Blood CellsSelenium RBC-mCncSeleniumDRUG/TOXSelenium, Red blood cellsMCnc

Frequently asked questions

Code details

Code5723-2
SystemLOINC
Display nameSelenium (RBC) [Mass/Vol]
DescriptionSelenium
Short nameSelenium RBC-mCnc
ComponentSelenium
PropertyMCnc
TimingPt
System (specimen)RBC
ScaleQn
ClassDRUG/TOX
Example unitsug/L
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0
Last changed2.73

Consumer names

Selenium, Red blood cells

Part names

SeleniumMCncPtRBCQnMass ConcentrationPoint in time (spot)Red Blood Cells

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 5723-2 | HealthAssure