LOINCActiveObservation

LOINC Code 40662-9: Protein resting (12H U) [Mass/Time]

40662-9 is a LOINC code used to identify Protein resting (12H 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^resting. 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^resting. 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

  • Protein [Mass/time] in 12 hour Urine --resting
  • Protein^resting
  • 12 hours; 12HR; Chemistry; Kidney; Mass Rate; mRate; Nephrology; PR; Prot; QNT; Quan; Quant; Quantitative; Renal; 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 resting (12H U) [Mass/Time]Protein [Mass/time] in 12 hour Urine --restingProt Resting 12h Ur-mRateProtein^restingCHEMProtein resting, UrineMRat

Frequently asked questions

Code details

Code40662-9
SystemLOINC
Display nameProtein resting (12H U) [Mass/Time]
DescriptionProtein^resting
Short nameProt Resting 12h Ur-mRate
ComponentProtein^resting
PropertyMRat
Timing12H
System (specimen)Urine
ScaleQn
ClassCHEM
Example unitsg/12 H
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.15
Last changed2.70

Consumer names

Protein resting, Urine

Part names

Protein^restingMRat12HUrineQnMass Rate12 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 40662-9 | HealthAssure