LOINCActiveBoth

LOINC Code 38251-5: Calcium oxalate (24H U) [Mass/Time]

38251-5 is a LOINC code used to identify Calcium oxalate (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 Calcium oxalate. 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 Calcium oxalate. 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

  • Calcium oxalate [Mass/time] in 24 hour Urine
  • Calcium oxalate
  • 1 day; 24 hours; 24HR; Ca; CaC2O4; Cal; CaOx; Chemistry; Ethanedioate; Ethanedioic acid; Kidney; Mass Rate; mRate; Nephrology; Oxal; Oxalic acid; 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

Calcium oxalate (24H U) [Mass/Time]Calcium oxalate [Mass/time] in 24 hour UrineCaOx 24h Ur-mRateCalcium oxalateCHEMCalcium oxalate, UrineMRat

Frequently asked questions

Code details

Code38251-5
SystemLOINC
Display nameCalcium oxalate (24H U) [Mass/Time]
DescriptionCalcium oxalate
Short nameCaOx 24h Ur-mRate
ComponentCalcium oxalate
PropertyMRat
Timing24H
System (specimen)Urine
ScaleQn
ClassCHEM
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.13
Last changed2.73

Consumer names

Calcium oxalate, Urine

Part names

Calcium oxalateMRat24HUrineQnMass 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 38251-5 | HealthAssure