LOINCActiveBoth
LOINC Code 29326-6: Carboxy tetrahydrocannabinol (Gast fld) [Mass/Vol]
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 Carboxy tetrahydrocannabinol. It is commonly used with the system or sample type Gast fld.
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
- Carboxy tetrahydrocannabinol [Mass/volume] in Gastric fluid
- Carboxy tetrahydrocannabinol
- 11-nor-9-carboxy-delta-9-THC; 11-nor-9-carboxy-THC; 11-nor-delta-9-THC-9-COOH; 9-carboxy-11-nor-delta-9-tetrahydrocannabinol; Addiction; Carboxytetrahydrocannabinol; CarboxyTHC; Carboxy-THC-delta-9; Delta(9)-THC; Delta-9-tetrahydrocannabinol; Delta-9-tetrahydrocannabinol metabolite; Dronabinol; DRUG/TOXICOLOGY; Drugs; Drugs of abuse; GAST; Gastric contents; Gastric fluid; Illicit; Level; Marijuana; Mass concentration; Nabilone; Point in time; PotentialForAbuse; QNT; Quan; Quant; Quantitative; Random; THC; THCA; THCC; THCCOOH; THC-COOH
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.
Related SNOMED CT concepts
Related observations and tests
Common synonyms
Carboxy tetrahydrocannabinol (Gast fld) [Mass/Vol]Carboxy tetrahydrocannabinol [Mass/volume] in Gastric fluidCarboxyTHC Gast-mCncCarboxy tetrahydrocannabinolDRUG/TOXCarboxy tetrahydrocannabinol, Stomach fluidMCnc
Frequently asked questions
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.