Citrate, Urine - Saskatoon

Overview

Description

Ordering recommendation

• Random collection accepted on children <18 years
• For adults, 24 hour urine collection is preferred, but testing can be performed on random samples

Specimen Information

Specimen types accepted

• Urine (24 hour collection)
• Urine (random collection)

Specimen collection container

• Preferred collection container: 24 hour urine jug with no additive
• Alternate collection container (24h aliquot or random sample): sterile wide mouth screw cap container

Collection procedure

• Refrigerate during collection
• Follow 24 hour urine collection instructions
• State exact times, dates and volume of collection on requisition
• Deliver to a hospital test centre or patient service centre within 4 hours of collection

Required volume

• 5 mL

Transport and stability

• 24 hour urine jug
  • Refrigerate during collection
  • Adjust pH of an aliquot to < 3 within 4 hours of collection by drop wise addition of 6N HCl and then freeze
• Random samples
  • Adjust pH to < 3 within 4 hours of collection by drop wise addition of 6N HCl and then freeze

Performance

Days/times performed

Availability	Shipped Thursdays
Testing site	Referred out by St. Paul’s Hospital Laboratory to University of Alberta Hospital, Edmonton, AB

 

Maximum laboratory time

Results reporting

• 14 day turnaround time by testing laboratory

Reflex testing

• Creatinine; result required for interpretation

Last Updated: January 9, 2026