LOINCActiveObservation

LOINC Code 53319-0: Crystals Auto Ql (U)

53319-0 is a LOINC code used to identify Crystals 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 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 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: Automated

What it does not mean

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

Key facts

  • Crystals [Presence] in Urine by Automated
  • Crystals
  • Auto; Automated detection; Crys; Cryst; Crystal; Elec; Elect; Electr; 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

Crystals Auto Ql (U)Crystals [Presence] in Urine by AutomatedCrystals Ur Ql AutoCrystalsUACrystals, UrinePrThr

Frequently asked questions

Code details

Code53319-0
SystemLOINC
Display nameCrystals Auto Ql (U)
DescriptionCrystals
Short nameCrystals Ur Ql Auto
ComponentCrystals
PropertyPrThr
TimingPt
System (specimen)Urine
ScaleOrd
MethodAutomated
ClassUA
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.24
Last changed2.73

Consumer names

Crystals, Urine

Part names

CrystalsPrThrPtUrineOrdAutomatedPresence 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 53319-0 | HealthAssure