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 19231-0: HCO3 standard (BldC) [Moles/Vol]

Name: LOINC Code 19231-0: HCO3 standard (BldC) [Moles/Vol]
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

19231-0 is a LOINC code used to identify HCO3 standard (BldC) [Moles/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 Bicarbonate^^standard. It is commonly used with the system or sample type BldC.

Reviewed by HealthAssure Clinical TeamUpdated 25 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 Bicarbonate^^standard. It is commonly used with the system or sample type BldC.

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

Bicarbonate [Moles/volume] standard in Capillary blood
Bicarbonate^^standard
Concentration of bicarbonate in whole blood at 38 degree Celsius equilibrated at a pCO2 of 40 mm Hg with the blood Hb fully oxygenated.
BIC; bicar; Bicarb; Blood - capillary; Cap bld; Cap blood; Capillary bld; Capillary blood; Chemistry; Finger stick; HCO3; Level; Lung; Point in time; Pulmonary; Pulmonology; QNT; Quan; Quant; Quantitative; Random; Respiratory; std; Substance Concentration

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.

Related SNOMED CT concepts

705114005SNOMED CT mapping for HCO3 standard (BldC) [Moles/Vol] (19231-0)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

HCO3 standard (BldC) [Moles/Vol]Bicarbonate [Moles/volume] standard in Capillary bloodHCO3 std BldC-sCncBicarbonate^^standardCHEMBicarbonate Standard, BloodSCnc

Frequently asked questions

Code details

Code19231-0

SystemLOINC

Display nameHCO3 standard (BldC) [Moles/Vol]

DescriptionBicarbonate^^standard

Short nameHCO3 std BldC-sCnc

ComponentBicarbonate^^standard

PropertySCnc

TimingPt

System (specimen)BldC

ScaleQn

ClassCHEM

Example unitsmmol/L

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0l

Last changed2.56

Consumer names

Bicarbonate Standard, Blood

Part names

Bicarbonate^^standardSCncPtBldCQnSubstance ConcentrationPoint in time (spot)Blood capillary

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.