LOINCActiveObservation

LOINC Code 97204-2: Oxidants (U) [Mass/Vol]

97204-2 is a LOINC code used to identify Oxidants (U) [Mass/Vol] 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 Oxidants. 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 Oxidants. 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

What it does not mean

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

Key facts

Oxidants [Mass/volume] in Urine
Oxidants
This test is performed as part of specimen validity testing. Substance abusers may attempt to evade detection by the addition of a substance to their urine specimen, a number of which are classified as oxidants. Urine specimens with an oxidant concentration of greater than 200 mg/L are considered adulterated, which may affect urine drug testing results. [https//www.federalregister.gov/documents/2017/01/23/2017-00979/mandatory-guidelines-for-federal-workplace-drug-testing-programs].
Adulterant; DRUG/TOXICOLOGY; Drugs; Level; Mass concentration; Oxidant; Point in time; QNT; Quan; Quant; Quantitative; Random; 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

Oxidants (U) [Mass/Vol]Oxidants [Mass/volume] in UrineOxidants Ur-mCncOxidantsDRUG/TOXOxidants, UrineMCnc

Frequently asked questions

Code details

Code97204-2
SystemLOINC
Display nameOxidants (U) [Mass/Vol]
DescriptionOxidants
Short nameOxidants Ur-mCnc
ComponentOxidants
PropertyMCnc
TimingPt
System (specimen)Urine
ScaleQn
ClassDRUG/TOX
Example unitsmg/dL
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.70
Last changed2.70

Consumer names

Oxidants, Urine

Part names

OxidantsMCncPtUrineQnMass ConcentrationPoint 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 97204-2 | HealthAssure