What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActiveObservation

LOINC Code 33241-1: Calcium carbonate crystals Computer assisted Ql (U)

Name: LOINC Code 33241-1: Calcium carbonate crystals Computer assisted Ql (U)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:20.067Z

33241-1 is a LOINC code used to identify Calcium carbonate crystals Computer assisted 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 Calcium carbonate crystals. 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 Calcium carbonate crystals. 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: Computer assisted

What it does not mean

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

Key facts

Calcium carbonate crystals [Presence] in Urine by Computer assisted method
Calcium carbonate crystals
Apatite crystals; Artificial Intelligence; Automated detection; Ca; Ca Carbonate; Ca Carbonate Cry; CaCO3; Cal; Carb; Carbonic acid; Comp Assist; Crys; Cryst; Crystal; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; 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

Calcium carbonate crystals Computer assisted Ql (U)Calcium carbonate crystals [Presence] in Urine by Computer assisted methodCa Carbonate Cry Ur Ql Comp AssistCalcium carbonate crystalsUACalcium carbonate crystals, UrinePrThr

Frequently asked questions

Code details

Code33241-1

SystemLOINC

Display nameCalcium carbonate crystals Computer assisted Ql (U)

DescriptionCalcium carbonate crystals

Short nameCa Carbonate Cry Ur Ql Comp Assist

ComponentCalcium carbonate crystals

PropertyPrThr

TimingPt

System (specimen)Urine

ScaleOrd

MethodComputer assisted

ClassUA

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.09

Last changed2.73

Consumer names

Calcium carbonate crystals, Urine

Part names

Calcium carbonate crystalsPrThrPtUrineOrdComputer assistedPresence or ThresholdPoint in time (spot)Computer assisted method

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.