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.

LOINCActiveBoth

LOINC Code 58363-3: Alpha hydroxyalprazolam/Creatinine (U) [Mass ratio]

Name: LOINC Code 58363-3: Alpha hydroxyalprazolam/Creatinine (U) [Mass ratio]
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

58363-3 is a LOINC code used to identify Alpha hydroxyalprazolam/Creatinine (U) [Mass ratio] 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 Alpha hydroxyalprazolam/Creatinine. It is commonly used with the system or sample type Urine.

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 Alpha hydroxyalprazolam/Creatinine. 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: Both

What it does not mean

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

Key facts

Alpha hydroxyalprazolam/Creatinine [Mass Ratio] in Urine
Alpha hydroxyalprazolam/Creatinine
Alfa; Alpha hydroxy alprazolam; Alprozolam metabolite; A-OH Alpraz; CR; Crea; Creat; DRUG/TOXICOLOGY; Drugs; Hydroxy alprazolam; Hydroxyalpraz; Mass concentration ratio; Mass ratio; MCRto; OH-Alpraz; Point in time; QNT; Quan; Quant; Quantitative; Random; UA; UCr; UR; 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.

Related SNOMED CT concepts

705114005SNOMED CT mapping for Alpha hydroxyalprazolam/Creatinine (U) [Mass ratio] (58363-3)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

Alpha hydroxyalprazolam/Creatinine (U) [Mass ratio]Alpha hydroxyalprazolam/Creatinine [Mass Ratio] in UrineA-OH Alpraz/Creat UrAlpha hydroxyalprazolam/CreatinineDRUG/TOXAlpha hydroxyalprazolam/Creatinine, UrineMRto

Frequently asked questions

Code details

Code58363-3

SystemLOINC

Display nameAlpha hydroxyalprazolam/Creatinine (U) [Mass ratio]

DescriptionAlpha hydroxyalprazolam/Creatinine

Short nameA-OH Alpraz/Creat Ur

ComponentAlpha hydroxyalprazolam/Creatinine

PropertyMRto

TimingPt

System (specimen)Urine

ScaleQn

ClassDRUG/TOX

Example unitsug/g creatinine

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.30

Last changed2.73

Consumer names

Alpha hydroxyalprazolam/Creatinine, Urine

Part names

Alpha hydroxyalprazolam/CreatinineMRtoPtUrineQnMass RatioPoint 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.