LOINCActiveObservation

LOINC Code 50238-5: Tyrosine crystals Computer assisted Ql (U)

50238-5 is a LOINC code used to identify Tyrosine 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 Tyrosine 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 Tyrosine 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

  • Tyrosine crystals [Presence] in Urine by Computer assisted method
  • Tyrosine crystals
  • Artificial Intelligence; Automated detection; Comp Assist; Crys; Cryst; Crystal; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Screen; Tyr; 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

Tyrosine crystals Computer assisted Ql (U)Tyrosine crystals [Presence] in Urine by Computer assisted methodTyrosine Cry Ur Ql Comp AssistTyrosine crystalsUATyrosine crystals, UrinePrThr

Frequently asked questions

Code details

Code50238-5
SystemLOINC
Display nameTyrosine crystals Computer assisted Ql (U)
DescriptionTyrosine crystals
Short nameTyrosine Cry Ur Ql Comp Assist
ComponentTyrosine crystals
PropertyPrThr
TimingPt
System (specimen)Urine
ScaleOrd
MethodComputer assisted
ClassUA
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

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

Consumer names

Tyrosine crystals, Urine

Part names

Tyrosine 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.

LOINC Code 50238-5 | HealthAssure