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 40858-3: Glucose baseline (BldC) [Mass/Vol]

Name: LOINC Code 40858-3: Glucose baseline (BldC) [Mass/Vol]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:27.146Z

40858-3 is a LOINC code used to identify Glucose baseline (BldC) [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 Glucose^baseline. It is commonly used with the system or sample type BldC.

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 Glucose^baseline. 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

Glucose [Mass/volume] in Capillary blood --baseline
Glucose^baseline
Blood - capillary; BS; Cap bld; Cap blood; Capillary bld; Capillary blood; CHEMISTRY.CHALLENGE TESTING; Endocrine; Endocrinology; Finger stick; Glu; Glu tol; Gluc; Glucose tolerance; Glucoseur; GTT; Level; Mass concentration; Point in time; QNT; Quan; Quant; Quantitative; Random

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

Glucose baseline (BldC) [Mass/Vol]Glucose [Mass/volume] in Capillary blood --baselineGlucose BS BldC-mCncGlucose^baselineCHALGlucose baseline, BloodMCnc

Frequently asked questions

Code details

Code40858-3

SystemLOINC

Display nameGlucose baseline (BldC) [Mass/Vol]

DescriptionGlucose^baseline

Short nameGlucose BS BldC-mCnc

ComponentGlucose^baseline

PropertyMCnc

TimingPt

System (specimen)BldC

ScaleQn

ClassCHAL

Example unitsmg/dL

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.15

Last changed2.73

Consumer names

Glucose baseline, Blood

Part names

Glucose^baselineMCncPtBldCQnMass 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.