Creatinine, Dopamine, Epinephrine, Norepinephrine, and Total Catecholamines (calculated)
Catecholamines, Fractionated, Random Urine - The three catecholamines (norepinephrine, epinephrine, and dopamine) are the principal secretory products of neural tissue. Clinically, the measurement of circulating catecholamines is valuable in the diagnosis of catecholamine secreting tumors associated chiefly with hypertension (pheochromocytomas, neuroblastomas, and gangliomas) and with the evaluation of orthostatic hypotension.
It is preferable for the patient to be off medications for 3 days before specimen collection. However, common antihypertensives (diuretics, ACE inhibitors, calcium channel blockers, alpha and beta blockers) cause minimal or no interference. Patient should avoid alcohol, coffee, tea, tobacco, and strenuous exercise before collection.
10.0 mL Urine in a Plastic Container
10 mL urine with 6N HCl collected in a plastic, urine container
After urine collection, add 0.5-1.0g/L of 6N HCL to maintain PH below 3.
Unacceptable Ambient
7 days Refrigerated
28 days Frozen (Transport)
Urine with preservative should maintain a pH below 3.
Please specify on the request form and on the urine container random urine volume and time of collection
5.0 mL Urine
Refer to Interpretive Results
Catecholamines, Fractionated, Random Urine - The three catecholamines (norepinephrine, epinephrine, and dopamine) are the principal secretory products of neural tissue. Clinically, the measurement of circulating catecholamines is valuable in the diagnosis of catecholamine secreting tumors associated chiefly with hypertension (pheochromocytomas, neuroblastomas, and gangliomas) and with the evaluation of orthostatic hypotension.
2 days
00913333
82384, 82570