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 14643-1: Catecholamines Free (24H U) [Moles/Time]

Name: LOINC Code 14643-1: Catecholamines Free (24H U) [Moles/Time]
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

14643-1 is a LOINC code used to identify Catecholamines Free (24H U) [Moles/Time] 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 Catecholamines.free. It is commonly used with the system or sample type Urine.

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 Catecholamines.free. 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

What it does not mean

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

Key facts

Catecholamines Free [Moles/time] in 24 hour Urine
Catecholamines.free
1 day; 24 hours; 24HR; Cate; Catec; Catech; Catechol; Catecholamine; Catecholamines.total; Catechols; Chemistry; Epinephrine+norepinephrine+dopamine; FCA; FR; Non-protein bound; QNT; Quan; Quant; Quantitative; sRate; Substance Rate; 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.

Related SNOMED CT concepts

705114005SNOMED CT mapping for Catecholamines Free (24H U) [Moles/Time] (14643-1)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

Catecholamines Free (24H U) [Moles/Time]Catecholamines Free [Moles/time] in 24 hour UrineFCA 24h Ur-sRateCatecholamines.freeCHEMFree catecholamines, UrineSRat

Frequently asked questions

Code details

Code14643-1

SystemLOINC

Display nameCatecholamines Free (24H U) [Moles/Time]

DescriptionCatecholamines.free

Short nameFCA 24h Ur-sRate

ComponentCatecholamines.free

PropertySRat

Timing24H

System (specimen)Urine

ScaleQn

ClassCHEM

Example unitsnmol/24 H

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0k

Last changed2.73

Consumer names

Free catecholamines, Urine

Part names

Catecholamines.freeSRat24HUrineQnCatecholamines FreeSubstance Rate24 hours

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.