Calcium, Timed Urine

Abbrev Code:UCAT   
Order Code:LAB3819Order Name:Calcium Timed Urine
Methodology:Bichromatic endpoint
St Johns/St Joseph/Woodwinds: Arsenezo III dye
CPT Codes: 82340 x1, 81050 x1
Test Includes:Urine calcium and creatinine.
Turnaround Time:Performed and reported 24 hours/day.
Associated Links:

Urine Collection Procedure

Collection Instructions

Specimen:Urine, timed collection (20 to 28 hours)
Optimal Volume:Submit entire collection; analysis requires 1 mL
Container:3 L plastic jug
Collection Instructions:Place specimen on ice or in refrigerator during collection.

Processing and Shipping

Specimen Processing:Mix collection well before aliquot is taken. Aliquot 5 mL, 1 mL minimum. Store in refrigerator.
Shipping Instructions:Ship at refrigerated temperature.
Stability:Refrigerated - 7 days; frozen - 6 months.
Test Performed at or Referral Lab Chemistry  (Range, UMMC-West Bank, UMMC-East Bank, Ridges, Northland, Southdale, M Health Clinic and Surgery Center, St. Joseph's, St. John's, Woodwinds)


Reference Range:
Ca free diet 0.005 - 0.040 g/24 h
Low to average Ca intake 0.05 - 0.15 g/24 h
Average Ca intake 0.1 - 0.3 g/24/h
  • Suspect hypocalcemia or hypercalcemia
  • Monitor treatment for calcemic disorder.


Click HERE to Report test errors or omissions.
*If no email program is associated with this computer, please contact: for TestID: 3151"