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.

LOINCActiveBoth

LOINC Code 15052-4: Cobalamin (Vitamin B12).unsaturated Binding Capacity [Moles/Vol]

Name: LOINC Code 15052-4: Cobalamin (Vitamin B12).unsaturated Binding Capacity [Moles/Vol]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:25.112Z

15052-4 is a LOINC code used to identify Cobalamin (Vitamin B12).unsaturated Binding Capacity [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 Cobalamins.unsaturated binding capacity. 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 Cobalamins.unsaturated binding capacity. 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: Both

What it does not mean

The code identifies the observation or test, not the actual result.

Key facts

Cobalamin (Vitamin B12).unsaturated Binding Capacity [Moles/volume] in Serum or Plasma
Cobalamins.unsaturated binding capacity
Bind; C721; Cbl; Chemistry; Cobalamin; Cyanocobalamin ubc; Level; Pl; Plasma; Plsm; Point in time; QNT; Quan; Quant; Quantitative; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR; Substance concentration; Unsat; Vit B12; Vit B12 USB; Vitamin B12

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

Cobalamin (Vitamin B12).unsaturated Binding Capacity [Moles/Vol]Cobalamin (Vitamin B12).unsaturated Binding Capacity [Moles/volume] in Serum or PlasmaVit B12 USB SerPl-sCncCobalamins.unsaturated binding capacityCHEMCobalamin (Vitamin B12).unsaturated Binding Capacity, BloodSCnc

Frequently asked questions

Code details

Code15052-4

SystemLOINC

Display nameCobalamin (Vitamin B12).unsaturated Binding Capacity [Moles/Vol]

DescriptionCobalamins.unsaturated binding capacity

Short nameVit B12 USB SerPl-sCnc

ComponentCobalamins.unsaturated binding capacity

PropertySCnc

TimingPt

System (specimen)Ser/Plas

ScaleQn

ClassCHEM

Example unitspmol/L

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0k

Last changed2.38

Consumer names

Cobalamin (Vitamin B12).unsaturated Binding Capacity, Blood

Part names

Cobalamins.unsaturated binding capacitySCncPtSer/PlasQnCyanocobalamin.unsaturated Binding CapacitySubstance 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.