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.

LOINCActiveObservation

LOINC Code 19355-7: Barbital cutoff Screen (U) [Mass/Vol]

Name: LOINC Code 19355-7: Barbital cutoff Screen (U) [Mass/Vol]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:28.193Z

19355-7 is a LOINC code used to identify Barbital cutoff Screen (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 Barbital cutoff. 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 Barbital cutoff. 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
Method: Screen

What it does not mean

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

Key facts

Barbital cutoff [Mass/volume] in Urine for Screen method
Barbital cutoff
Barbitone; Barbiturate; CtO; Diethylmalonylurea; DRUG/TOXICOLOGY; Drugs; Level; Mass concentration; Megal; Neurinase; Pneumogeine-barbital; Point in time; Provervon n; QNT; Quan; Quant; Quantitative; Random; Scn; Scr; Scrn; UA; UR; Urn; Veraine buriat; Veronal; Vitanerton N Kerne

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

Barbital cutoff Screen (U) [Mass/Vol]Barbital cutoff [Mass/volume] in Urine for Screen methodBarbital CtO Ur Scn-mCncBarbital cutoffDRUG/TOXBarbital cutoff, UrineMCnc

Frequently asked questions

Code details

Code19355-7

SystemLOINC

Display nameBarbital cutoff Screen (U) [Mass/Vol]

DescriptionBarbital cutoff

Short nameBarbital CtO Ur Scn-mCnc

ComponentBarbital cutoff

PropertyMCnc

TimingPt

System (specimen)Urine

ScaleQn

MethodScreen

ClassDRUG/TOX

Example unitsng/mL

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0l

Last changed2.34

Consumer names

Barbital cutoff, Urine

Part names

Barbital cutoffMCncPtUrineQnScreenMass ConcentrationPoint in time (spot)Toxicology screen

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.