LOINCActiveBoth

LOINC Code 13479-1: Benzoylecgonine/Creatinine (U) [Mass ratio]

13479-1 is a LOINC code used to identify Benzoylecgonine/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 Benzoylecgonine/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 Benzoylecgonine/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

  • Benzoylecgonine/Creatinine [Mass Ratio] in Urine
  • Benzoylecgonine/Creatinine
  • BEC; BEG; Benz; Benzoylec; BZE; Cocaine degradation production; Cocaine metabolite; CR; Crack metabolite; Crea; Creat; DRUG/TOXICOLOGY; Drugs; Mass concentration ratio; Mass ratio; MCRto; 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.

Common synonyms

Benzoylecgonine/Creatinine (U) [Mass ratio]Benzoylecgonine/Creatinine [Mass Ratio] in UrineBZE/Creat UrBenzoylecgonine/CreatinineDRUG/TOXBenzoylecgonine/Creatinine, UrineMRto

Frequently asked questions

Code details

Code13479-1
SystemLOINC
Display nameBenzoylecgonine/Creatinine (U) [Mass ratio]
DescriptionBenzoylecgonine/Creatinine
Short nameBZE/Creat Ur
ComponentBenzoylecgonine/Creatinine
PropertyMRto
TimingPt
System (specimen)Urine
ScaleQn
ClassDRUG/TOX
Example unitsng/g creatinine
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0j-a
Last changed2.73

Consumer names

Benzoylecgonine/Creatinine, Urine

Part names

Benzoylecgonine/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.