Test directory: Catecholamines, Frac, 24Hr Urn w/Cr

Ordering Code377
Test NameCatecholamines, Frac, 24Hr Urn w/Cr
AliasCatecholamines, Fractionated, 24-Hour Urine with
Preferred SpecimenUrine, 24 Hour
Aliquot from a 24-hour urine that has been preserved with 25 mL 6N HCl, collected in a plastic, 24-hour urine container
Preferred Container24 Hour Urine Container, 24 Hour Urine Aliquot
Other Specimen/ContainerAliquot from a 24-hour urine, unpreserved, with a pH < or = 6, collected in a plastic, 24-hour urine container
Optimum Volume10 mL
Collection InstructionsPatient Preparation:
It is preferable for the patient to be off medications for three days prior to 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 prior to collection
Collect 24-hour urine with 25 mL 6N HCl to maintain a pH < or = 3. If no preservative is used, specimen must be stored refrigerated during collection but shipped frozen and pH must be < or = 6. Record 24-hour urine volume and patient's age on test request form and on urine container.
Handling InstructionsAdjust to pH<3 with 6N HCl.
Transport RequirementsOahu: Ambient
Airline: Ambient
Unpreserved Urine: Frozen
Specimen StabilityAmbient: 7 Days
Refrigerated: 30 Days
Frozen: 48 Days
Unpreserved Urine:
Room temperature and Refrigerated: Unacceptable
Frozen: 30 Days
Rejection CriteriaPreserved urine received refrigerated with pH >3,
Unpreserved urine received frozen with pH >6
Avail. StatNO
Analytic TimeUp to 6 Days
MethodologyHigh Performance Liquid Chromatography
Reference Lab Quest Diagnostics Infectious Disease

Reference range(s)

ComponentAgeMale NormMale Critical LowMale Critical HighFemale NormFemale Critical HighFemale Critical LowUnitsAdd'l info
Total VolumeALLSee report.
Creatinine, 24 Hr UrineALLSee report.
Epinephrine, 24 Hr UrineALLSee report.
Norepinephrine, 24 Hr UrineALLSee report.
Calculated Total (E+NE)ALLSee report.
Dopamine, 24 Hr UrineALLSee report.