LOINCActiveObservation

LOINC Code 40226-3: Calcium baseline [Moles/Vol]

40226-3 is a LOINC code used to identify Calcium baseline [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 Calcium^baseline. 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 Calcium^baseline. 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

  • Calcium [Moles/volume] in Serum or Plasma --baseline
  • Calcium^baseline
  • BS; Ca; Cal; CHEMISTRY.CHALLENGE TESTING; Level; Pl; Plasma; Plsm; Point in time; QNT; Quan; Quant; Quantitative; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR; 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.

Common synonyms

Calcium baseline [Moles/Vol]Calcium [Moles/volume] in Serum or Plasma --baselineCalcium BS SerPl-sCncCalcium^baselineCHALCalcium baseline, BloodSCnc

Frequently asked questions

Code details

Code40226-3
SystemLOINC
Display nameCalcium baseline [Moles/Vol]
DescriptionCalcium^baseline
Short nameCalcium BS SerPl-sCnc
ComponentCalcium^baseline
PropertySCnc
TimingPt
System (specimen)Ser/Plas
ScaleQn
ClassCHAL
Example unitsmmol/L
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.15
Last changed2.70

Consumer names

Calcium baseline, Blood

Part names

Calcium^baselineSCncPtSer/PlasQnSubstance 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.

LOINC Code 40226-3 | HealthAssure