LOINCActiveObservation

LOINC Code 50231-0: Hyaline casts Auto Ql (U)

50231-0 is a LOINC code used to identify Hyaline casts Auto Ql (U) 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 Hyaline casts. 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 Hyaline casts. 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
  • Method: Automated

What it does not mean

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

Key facts

  • Hyaline casts [Presence] in Urine by Automated
  • Hyaline casts
  • Auto; Automated detection; Cast; Elec; Elect; Electr; Kidney; Nephrology; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Renal; Screen; UA; UR; URINALYSIS; 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

Hyaline casts Auto Ql (U)Hyaline casts [Presence] in Urine by AutomatedHyaline Casts Ur Ql AutoHyaline castsUAHyaline casts, UrinePrThr

Frequently asked questions

Code details

Code50231-0
SystemLOINC
Display nameHyaline casts Auto Ql (U)
DescriptionHyaline casts
Short nameHyaline Casts Ur Ql Auto
ComponentHyaline casts
PropertyPrThr
TimingPt
System (specimen)Urine
ScaleOrd
MethodAutomated
ClassUA
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.22
Last changed2.73

Consumer names

Hyaline casts, Urine

Part names

Hyaline castsPrThrPtUrineOrdAutomatedPresence or ThresholdPoint in time (spot)

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 50231-0 | HealthAssure