LOINCActiveBoth

LOINC Code 87767-0: Primidone/Creatinine Confirm (U) [Mass ratio]

87767-0 is a LOINC code used to identify Primidone/Creatinine Confirm (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 Primidone/Creatinine. 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 Primidone/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
  • Method: Confirm

What it does not mean

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

Key facts

  • Primidone/Creatinine [Mass Ratio] in Urine by Confirmatory method
  • Primidone/Creatinine
  • Cfm; CNFR; CNFRM; Conf; Confirmation; Confirmatory; CR; Crea; Creat; DRUG/TOXICOLOGY; Drugs; GCMS; LC/MS/MS; Mass concentration ratio; Mass ratio; MCRto; Mysoline; 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

Primidone/Creatinine Confirm (U) [Mass ratio]Primidone/Creatinine [Mass Ratio] in Urine by Confirmatory methodPrimidone/Creat Ur CfmPrimidone/CreatinineDRUG/TOXPrimidone/Creatinine, UrineMRto

Frequently asked questions

Code details

Code87767-0
SystemLOINC
Display namePrimidone/Creatinine Confirm (U) [Mass ratio]
DescriptionPrimidone/Creatinine
Short namePrimidone/Creat Ur Cfm
ComponentPrimidone/Creatinine
PropertyMRto
TimingPt
System (specimen)Urine
ScaleQn
MethodConfirm
ClassDRUG/TOX
Example unitsng/mg creatinine
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.63
Last changed2.73

Consumer names

Primidone/Creatinine, Urine

Part names

Primidone/CreatinineMRtoPtUrineQnConfirmMass 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.