LOINCActiveObservation

LOINC Code 13454-4: Calcium-phosphorus product [(Moles/Vol)*2]

13454-4 is a LOINC code used to identify Calcium-phosphorus product [(Moles/Vol)*2] 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-phosphorus product. 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-phosphorus product. 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-phosphorus product [(Moles/volume)*2] in Serum or Plasma
  • Calcium-phosphorus product
  • Ca; Cal; CaxP; Chemistry; Pl; Plasma; Plsm; Point in time; QNT; Quan; Quant; Quantitative; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR

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-phosphorus product [(Moles/Vol)*2]Calcium-phosphorus product [(Moles/volume)*2] in Serum or PlasmaCaxP SerPl-SCncSqCalcium-phosphorus productCHEMCalcium-phosphorus product, BloodSCncSq

Frequently asked questions

Code details

Code13454-4
SystemLOINC
Display nameCalcium-phosphorus product [(Moles/Vol)*2]
DescriptionCalcium-phosphorus product
Short nameCaxP SerPl-SCncSq
ComponentCalcium-phosphorus product
PropertySCncSq
TimingPt
System (specimen)Ser/Plas
ScaleQn
ClassCHEM
Example unitsmmol2/L2
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0j-a
Last changed2.73

Consumer names

Calcium-phosphorus product, Blood

Part names

Calcium-phosphorus productSCncSqPtSer/PlasQnSubstance Concentration SquaredPoint 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 13454-4 | HealthAssure