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.

LOINCActiveBoth

LOINC Code 8175-2: Tetrahydrocannabinol SAMHSA screen method Ql (U)

Name: LOINC Code 8175-2: Tetrahydrocannabinol SAMHSA screen method Ql (U)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:05.776Z

8175-2 is a LOINC code used to identify Tetrahydrocannabinol SAMHSA screen method Ql (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 Tetrahydrocannabinol. 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 Tetrahydrocannabinol. 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: SAMHSA screen

What it does not mean

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

Key facts

Tetrahydrocannabinol [Presence] in Urine by SAMHSA screen method
Tetrahydrocannabinol
Delta(9)-THC; Delta-9-tetrahydrocannabinol; Dronabinol; DRUG/TOXICOLOGY; Drugs; Marijuana; Nabilone; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; SAMHSA Scn; SAMSHA; Scn; Scr; Screen; Scrn; Substance Abuse and Mental Health Services Administration; THC; 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

Tetrahydrocannabinol SAMHSA screen method Ql (U)Tetrahydrocannabinol [Presence] in Urine by SAMHSA screen methodTHC Ur Ql SAMHSA ScnTetrahydrocannabinolDRUG/TOXTetrahydrocannabinol, UrinePrThr

Frequently asked questions

Code details

Code8175-2

SystemLOINC

Display nameTetrahydrocannabinol SAMHSA screen method Ql (U)

DescriptionTetrahydrocannabinol

Short nameTHC Ur Ql SAMHSA Scn

ComponentTetrahydrocannabinol

PropertyPrThr

TimingPt

System (specimen)Urine

ScaleOrd

MethodSAMHSA screen

ClassDRUG/TOX

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0h(2)

Last changed2.70

Consumer names

Tetrahydrocannabinol, Urine

Part names

TetrahydrocannabinolPrThrPtUrineOrdSAMHSA screenPresence or ThresholdPoint 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.