Biomarker Lens

Biomarkers · Chemical

Catechol,Pl,T(2 hr)

Understand what Catechol,Pl,T(2 hr) signals

Primary unit
pg/mL
LOINC codes
16558-9, 16559-7, 30486-5, 30487-3
Commercial laboratory assays
4

Catecholamines are a group of hormones made by your adrenal glands, two small glands located above your kidneys. Hormones act as chemical messengers in your bloodstream.

Compare commercial laboratory assays for Catechol,Pl,T(2 hr)

Check orderable catalog codes, specimen types, fasting requirements, and demographic reference ranges across laboratories.

Catecholamines, Total, Suppression by Clonidine, Plasma

Laboratory
Quest Diagnostics
Test code
10068
Specimen
Plasma
Fasting
Not stated
LOINC
16558-9, 16559-7, 30486-5, 30487-3

Laboratory assay overview

Catecholamines include the hormones epinephrine, norepinephrine, and dopamine. Catecholamines, along with VMA, are produced in chromaffin cell tumors, pheochromocytoma, ganglioneuroma, and neuroblastoma. Symptoms of pheochromocytomas include episodic hypertension, headaches, sweating, heart palpitations, and anxiety.

Quest Diagnostics population reference ranges

Quest Diagnostics calculates these statistical intervals for this specific assay and demographic group, not as universal optimal targets.

PopulationRange
Baseline<18 years | No Reference Range Available
Baseline≥18 years | Supine: <632 pg/mL Upright: <1046 pg/mL
1 Hour | Not Established
2 Hours | Not Established
3 Hours | Not Established
View complete laboratory reference notes

Catecholamines, Total, Plasma Baseline | <18 years | No Reference Range Available Baseline | ≥18 years | Supine: <632 pg/mL Upright: <1046 pg/mL 1 Hour | | Not Established 2 Hours | | Not Established 3 Hours | | Not Established

Quest Diagnostics test directory, test code 10068

Clonidine Suppression Test (Four-hour)

Laboratory
Labcorp
Test code
123158
Specimen
Plasma
Fasting
Not stated
Turnaround
2 - 4 days

Laboratory assay overview

Diagnose pheochromocytoma and those paragangliomas that may secrete epinephrine, norepinephrine, or both. Such tumors may cause paroxysmal or persistent hypertension. Investigation of hypertensive patients, especially younger individuals, particularly when hypertension is paroxysmal, suggesting pheochromocytoma.2

Labcorp test directory, test code 123158

Clonidine Suppression Test (One- to Three-hour)

Laboratory
Labcorp
Test code
123224
Specimen
Plasma
Fasting
Not stated
Turnaround
2 - 4 days

Laboratory assay overview

Diagnose pheochromocytoma and those paragangliomas that may secrete epinephrine, norepinephrine, or both. Such tumors may cause paroxysmal or persistent hypertension. Investigation of hypertensive patients, especially younger individuals, particularly when hypertension is paroxysmal, suggesting pheochromocytoma.2

Labcorp test directory, test code 123224

Clonidine Suppression Test (Three-hour)

Laboratory
Labcorp
Test code
123133
Specimen
Plasma
Fasting
Not stated
Turnaround
2 - 4 days

Laboratory assay overview

Diagnose pheochromocytoma and those paragangliomas that may secrete epinephrine, norepinephrine, or both. Such tumors may cause paroxysmal or persistent hypertension. Investigation of hypertensive patients, especially younger individuals, particularly when hypertension is paroxysmal, suggesting pheochromocytoma.2

Labcorp test directory, test code 123133

Verify these ranges and sources

We compile every detail above directly from named laboratory directories and published clinical studies. Laboratories calculate standard reference intervals from the statistical distribution of tested populations for a specific assay method and demographic group, rather than setting universal optimal targets.

Always review your personal lab results with a licensed clinician, or track your lab history and health goals in Aumnivida.

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