Room temperature stability: 1 week (acidified)
After urine collection, add 6N HCl to maintain a pH below 3. Urine
without preservative is acceptable if pH is below 6 and the sample
is shipped frozen. Record patients age on test request form and urine
It is preferable for the patient to be off medications for three days
prior to collection. Patient should avoid tobacco, tea, coffee, for
three days prior to specimen collection. Common antihypertensives
(diuretics, ACE inhibitors, calcium channel blockers, alpha and beta
blockers) cause minimal or no interference. Medications which are
alpha agonists (Aldomet), alpha blockers (Dibenzyline) should be
avoided 18-24 hours prior to specimen collection.
Reported (Analytical Time)
The CPT codes provided are based on AMA guidelines and are for informational purposes only.
CPT coding is the sole responsibility of the billing party.
Please direct any questions regarding coding to the payer being billed.
Transport Temperature: Room temperature Methodology: Liquid Chromatography Tandem Mass Spectrometry