Methodology
Quantitative Electrochemiluminescent Immunoassay
Specimen Type
Urine
Performing Lab
ARUP
Epic ID
Other Reference Test
Lab Test Days
Daily
Standard TAT
24 Hours from receipt of sample
Collection Information
Specimen Required
1-4 mL Random or 24-Hour Timed, Urine
Collection Instructions
Thoroughly mix entire collection, then, perform one of the two processing options: Option 1: Immediately after collection, adjust pH to 8-9 by adding 10 percent Na2CO3. Transfer 1 mL aliquot urine to a transport tube. (Min: 0.5 mL) Option 2: Immediately after collection, transfer a maximum of 4 mL urine to an ARUP Standard Transport Tube prefilled with Sodium Carbonate (ARUP)supply #48096). (Min: 0.5 mL)
Processing Information - Lab Use Only
Transport Temperature
Refrigerate-OK/Frozen-OK
Specimen Stability
Room Temp: 4 Hours (pH 8-9); Refrigerated: 72 Hours; Frozen (preferred): 1 Month
Test Volume Required
4 mL Random or 24-Hour Timed, Urine
Minimum Test Volume
1 mL Random or 24-Hour Timed, Urine
Processing Instructions
Thoroughly mix entire collection, then, perform one of the two processing options: Option 1: Immediately after collection, adjust pH to 8-9 by adding 10 percent Na2CO3. Transfer 1 mL aliquot urine to a transport tube. (Min: 0.5 mL) Option 2: Immediately after collection, transfer a maximum of 4 mL urine to an ARUP Standard Transport Tube prefilled with Sodium Carbonate (ARUP)supply #48096). (Min: 0.5 mL) Complete an ARUP requisition and submit with specimen refrigerated. Send with daily Apollo courier pick up.
CPT Codes
83874
Revised
12/23/25
Initials
SA