LOINCActiveBoth

LOINC Code 41286-6: Uranium 235/Uranium 238 (U) [Mass ratio]

41286-6 is a LOINC code used to identify Uranium 235/Uranium 238 (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 Uranium 235/Uranium 238. 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 Uranium 235/Uranium 238. 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

  • Uranium 235/Uranium 238 [Mass Ratio] in Urine
  • Uranium 235/Uranium 238
  • DRUG/TOXICOLOGY; Drugs; Mass concentration ratio; Mass ratio; MCRto; Point in time; QNT; Quan; Quant; Quantitative; Random; U; UA; 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

Uranium 235/Uranium 238 (U) [Mass ratio]Uranium 235/Uranium 238 [Mass Ratio] in UrineUranium 235/Uranium 238 UrUranium 235/Uranium 238DRUG/TOXUranium 235/Uranium 238, UrineMRto

Frequently asked questions

Code details

Code41286-6
SystemLOINC
Display nameUranium 235/Uranium 238 (U) [Mass ratio]
DescriptionUranium 235/Uranium 238
Short nameUranium 235/Uranium 238 Ur
ComponentUranium 235/Uranium 238
PropertyMRto
TimingPt
System (specimen)Urine
ScaleQn
ClassDRUG/TOX
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.15
Last changed2.42

Consumer names

Uranium 235/Uranium 238, Urine

Part names

Uranium 235/Uranium 238MRtoPtUrineQnMass 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.

LOINC Code 41286-6 | HealthAssure