Methodology
High Performance Liquid Chromatography (HPLC); Electrochemical Detection
Synonyms
HVA
Specimen Type
Urine, Random
Performing Lab
Quest Diagnostics San Juan Capistrano
Epic ID
LAB01249
Lab Test Days
Tuesday and Friday
Standard TAT
3-7 Days
Collection Information
Specimen Required
5-10 mL Random Urine
Container Type
Sterile Container
Collection Instructions
It is preferable for the patient to be off medications for three days prior to collection. However, common antihypertensives (diuretics, ACD inhibitiors, 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.
Processing Information - Lab Use Only
Transport Temperature
Refrigerate-OK/Frozen-OK/Ambient-OK
Specimen Stability
Room Temp=7 Days; Refrigerated=7 Days; Frozen=28 Days
Rejection Criteria
pH > 3.0 and received unfrozen
Test Volume Required
10 mL Random Urine
Minimum Test Volume
5 mL Random Urine
Processing Instructions
pH adjusted to < 3.0 using 6N HCI. Urine without preservative is acceptable if pH is below 6 and the sample is shipped frozen. Indicate pH in comments, on specimen and on batch sheet.
Included Tests
Includes creatinine.
CPT Codes
82570, 83150
Revised
02-07-20
Initials
SL