LOINCActiveObservation

LOINC Code 1460-5: Cobalamin (Vitamin B12) post dose cyanocobalamin (24H U) [Mass/Time]

1460-5 is a LOINC code used to identify Cobalamin (Vitamin B12) post dose cyanocobalamin (24H U) [Mass/Time] 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^post dose cyanocobalamin. It is commonly used with the system or sample type Urine.

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^post dose cyanocobalamin. It is commonly used with the system or sample type Urine.

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

  • Cobalamin (Vitamin B12) [Mass/time] in 24 hour Urine --post dose cyanocobalamin
  • Cobalamins^post dose cyanocobalamin
  • 1 day; 24 hours; 24HR; After; c133; C721; Cbl; CHEMISTRY.CHALLENGE TESTING; CN-Cbl; Cobalamin; Mass rate; mRate; p B12; p dose; PST; QNT; Quan; Quant; Quantitative; Schilling test; Schillings test; UA; UR; Urn; Vit B12; 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) post dose cyanocobalamin (24H U) [Mass/Time]Cobalamin (Vitamin B12) [Mass/time] in 24 hour Urine --post dose cyanocobalaminVit B12 p B12 24h Ur-mRateCobalamins^post dose cyanocobalaminCHALCobalamin (Vitamin B12) after dose Cyanocobalamin, UrineMRat

Frequently asked questions

Code details

Code1460-5
SystemLOINC
Display nameCobalamin (Vitamin B12) post dose cyanocobalamin (24H U) [Mass/Time]
DescriptionCobalamins^post dose cyanocobalamin
Short nameVit B12 p B12 24h Ur-mRate
ComponentCobalamins^post dose cyanocobalamin
PropertyMRat
Timing24H
System (specimen)Urine
ScaleQn
ClassCHAL
Example unitsmg/24 H
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0
Last changed2.42

Consumer names

Cobalamin (Vitamin B12) after dose Cyanocobalamin, Urine

Part names

Cobalamins^post dose cyanocobalaminMRat24HUrineQnMass Rate24 hours

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 1460-5 | HealthAssure