LOINCActiveBoth

LOINC Code 19719-4: Trichlorothiazide Confirm Ql (U)

19719-4 is a LOINC code used to identify Trichlorothiazide Confirm 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 Trichlorothiazide. 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 Trichlorothiazide. 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: Confirm

What it does not mean

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

Key facts

  • Trichlorothiazide [Presence] in Urine by Confirmatory method
  • Trichlorothiazide
  • Cfm; CNFR; CNFRM; Conf; Confirmation; Confirmatory; DRUG/TOXICOLOGY; Drugs; GCMS; LC/MS/MS; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Screen; TCT; 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

Trichlorothiazide Confirm Ql (U)Trichlorothiazide [Presence] in Urine by Confirmatory methodTCT Ur Ql CfmTrichlorothiazideDRUG/TOXTrichlorothiazide, UrinePrThr

Frequently asked questions

Code details

Code19719-4
SystemLOINC
Display nameTrichlorothiazide Confirm Ql (U)
DescriptionTrichlorothiazide
Short nameTCT Ur Ql Cfm
ComponentTrichlorothiazide
PropertyPrThr
TimingPt
System (specimen)Urine
ScaleOrd
MethodConfirm
ClassDRUG/TOX
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0l
Last changed2.56

Consumer names

Trichlorothiazide, Urine

Part names

TrichlorothiazidePrThrPtUrineOrdConfirmPresence 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.

LOINC Code 19719-4 | HealthAssure