LOINCActiveBoth

LOINC Code 72821-2: Creatinine Unsp time Calc (U) [Mass/Time]

72821-2 is a LOINC code used to identify Creatinine Unsp time Calc (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 Creatinine. 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 Creatinine. 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: Both
  • Method: Calculated

What it does not mean

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

Key facts

  • Creatinine [Mass/time] by Calculated in Urine collected for unspecified duration
  • Creatinine
  • This term is used to report the average mass rate for creatinine accounting for the possibility of variation in collection time. It is usually reported as mg/hour.
  • ?Tm; Calc; Calculation; Chemistry; CR; Crea; Creat; Kidney; Mass Rate; mRate; Nephrology; QNT; Quan; Quant; Quantitative; Renal; UA; UCr; UR; Urn

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

Creatinine Unsp time Calc (U) [Mass/Time]Creatinine [Mass/time] by Calculated in Urine collected for unspecified durationCreat ?Tm Ur Calc-mRateCreatinineCHEMCreatinine, UrineMRat

Frequently asked questions

Code details

Code72821-2
SystemLOINC
Display nameCreatinine Unsp time Calc (U) [Mass/Time]
DescriptionCreatinine
Short nameCreat ?Tm Ur Calc-mRate
ComponentCreatinine
PropertyMRat
TimingXXX
System (specimen)Urine
ScaleQn
MethodCalculated
ClassCHEM
Example unitsmg/24 H
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.42
Last changed2.73

Consumer names

Creatinine, Urine

Part names

CreatinineMRatXXXUrineQnCalculatedMass RateUnspecified

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 72821-2 | HealthAssure