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 38993-2: Calcium oxalate dihydrate crystals Ql (Urine sed)

Name: LOINC Code 38993-2: Calcium oxalate dihydrate crystals Ql (Urine sed)
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

38993-2 is a LOINC code used to identify Calcium oxalate dihydrate crystals Ql (Urine sed) 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 dihydrate crystals. It is commonly used with the system or sample type Urine sed.

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 dihydrate crystals. It is commonly used with the system or sample type Urine sed.

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

Calcium oxalate dihydrate crystals [Presence] in Urine sediment
Calcium oxalate dihydrate crystals
Ca; CaC2O4; CaC2O4.2H2O; Cal; CaOx; COD Cry; Crys; Cryst; Crystal; Ethanedioate; Ethanedioic acid; Kidney; Nephrology; Ordinal; Oxal; Oxalic acid; Point in time; PR; QL; Qual; Qualitative; Random; Renal; Screen; UA; UR; URINALYSIS; Urine sediment; Urn; UrnS; Weddellite

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.

Related SNOMED CT concepts

705114005SNOMED CT mapping for Calcium oxalate dihydrate crystals Ql (Urine sed) (38993-2)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

Calcium oxalate dihydrate crystals Ql (Urine sed)Calcium oxalate dihydrate crystals [Presence] in Urine sedimentCOD Cry UrnS QlCalcium oxalate dihydrate crystalsUACalcium oxalate dihydrate crystals, Urine sedimentPrThr

Frequently asked questions

Code details

Code38993-2

SystemLOINC

Display nameCalcium oxalate dihydrate crystals Ql (Urine sed)

DescriptionCalcium oxalate dihydrate crystals

Short nameCOD Cry UrnS Ql

ComponentCalcium oxalate dihydrate crystals

PropertyPrThr

TimingPt

System (specimen)Urine sed

ScaleOrd

ClassUA

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.15

Last changed2.73

Consumer names

Calcium oxalate dihydrate crystals, Urine sediment

Part names

Calcium oxalate dihydrate crystalsPrThrPtUrine sedOrdPresence or ThresholdPoint in time (spot)Urine sediment

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.