LOINCBoth

LOINC Code 9381-5: Pyridinoline (2H U) [Mass/Time]

9381-5 is a LOINC code used to identify Pyridinoline (2H 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 Pyridinoline. It is commonly used with the system or sample type Urine.

Reviewed by HealthAssure Clinical TeamUpdated 25 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 Pyridinoline. 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: DISCOURAGED
  • Order vs observation: Both

What it does not mean

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

Key facts

  • Pyridinoline [Mass/time] in 2 hour Urine
  • Pyridinoline
  • 120 min; 120 minutes; 120min; 2 hours; 2HR; Chemistry; Mass Rate; mRate; PYD; Pyr; Pyridinium collagen crosslinks; 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

Pyridinoline (2H U) [Mass/Time]Pyridinoline [Mass/time] in 2 hour UrinePYD 2h Ur-mRatePyridinolineCHEMPyridinoline, UrineMRat

Frequently asked questions

Code details

Code9381-5
SystemLOINC
Display namePyridinoline (2H U) [Mass/Time]
DescriptionPyridinoline
Short namePYD 2h Ur-mRate
ComponentPyridinoline
PropertyMRat
Timing2H
System (specimen)Urine
ScaleQn
ClassCHEM
StatusDISCOURAGED
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0i
Last changed2.70

Consumer names

Pyridinoline, Urine

Part names

PyridinolineMRat2HUrineQnMass Rate2 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 9381-5 | HealthAssure