LOINCActiveBoth

LOINC Code 93746-6: Protein catabolic rate (24H U) [Mass/Time]

93746-6 is a LOINC code used to identify Protein catabolic rate (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 Protein catabolic rate. 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 Protein catabolic rate. 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

What it does not mean

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

Key facts

Protein catabolic rate based on 24 hour Urine [Calculated]
Protein catabolic rate
Protein catabolic rates can be used to estimate protein intake in dialysis patients and determine if dietary protein consumption is appropriate. Protein catabolic rate (PCR) is calculated using the urea-nitrogen appearance rate (UNA). Special consideration including, dietary monitoring of caloric and protein intake, should be given to patients with low protein catabolic rates. [PMID2129442]
1 day; 24 hours; 24HR; Chemistry; Mass Rate; mRate; PR; Prot; QNT; Quan; Quant; Quantitative; UA; 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

Protein catabolic rate (24H U) [Mass/Time]Protein catabolic rate based on 24 hour Urine [Calculated]Protein catabolic rate 24h Ur-mRateProtein catabolic rateCHEMProtein catabolic rate, UrineMRat

Frequently asked questions

Code details

Code93746-6
SystemLOINC
Display nameProtein catabolic rate (24H U) [Mass/Time]
DescriptionProtein catabolic rate
Short nameProtein catabolic rate 24h Ur-mRate
ComponentProtein catabolic rate
PropertyMRat
Timing24H
System (specimen)Urine
ScaleQn
ClassCHEM
Example unitsg/24 H
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.67
Last changed2.67

Consumer names

Protein catabolic rate, Urine

Part names

Protein catabolic rateMRat24HUrineQnMass 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 93746-6 | HealthAssure