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 19316-9: Tricyclic antidepressants positive Confirm Nom (U)

Name: LOINC Code 19316-9: Tricyclic antidepressants positive Confirm Nom (U)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:28.193Z

19316-9 is a LOINC code used to identify Tricyclic antidepressants positive Confirm Nom (U) 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 Tricyclic antidepressants positive. 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 Tricyclic antidepressants positive. 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: Confirm

What it does not mean

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

Key facts

Tricyclic antidepressants positive [Identifier] in Urine by Confirmatory method
Tricyclic antidepressants positive
Antidepres; Antidepressant; Cfm; CNFR; CNFRM; Conf; Confirmation; Confirmatory; DRUG/TOXICOLOGY; Drugs; GCMS; Identity or presence; LC/MS/MS; Nominal; Point in time; Pos; Random; TCA; Tricyclics; Tricyclics Pos; 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

Tricyclic antidepressants positive Confirm Nom (U)Tricyclic antidepressants positive [Identifier] in Urine by Confirmatory methodTricyclics Pos Ur CfmTricyclic antidepressants positiveDRUG/TOXTricyclic antidepressants positive, UrinePrid

Frequently asked questions

Code details

Code19316-9

SystemLOINC

Display nameTricyclic antidepressants positive Confirm Nom (U)

DescriptionTricyclic antidepressants positive

Short nameTricyclics Pos Ur Cfm

ComponentTricyclic antidepressants positive

PropertyPrid

TimingPt

System (specimen)Urine

ScaleNom

MethodConfirm

ClassDRUG/TOX

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0l

Last changed2.36

Consumer names

Tricyclic antidepressants positive, Urine

Part names

Tricyclic antidepressants positivePridPtUrineNomConfirmPresence or IdentityPoint 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.