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St. John Health System
Lab Catalog


Index:

Calcium Urine Timed

Order Name CALC TM U
Test Number: 3006000
Revision Date 04/30/2021
Test Name Methodology LOINC Code
Total Urine Volume
3167-4 
Creatinine, Urine, mg/dL
Kinetic Alkaline Picrate (Jaffe) 20624-3 
Creatinine, Urine, 24 Hour
2162-6 
Creatinine Urine Timed Estimated
 
Calcium 24 Hour Urine mg/dl
Arsenazo 18488-7 
Calcium 24 Hour Urine mg/24hr
6874-2 
Calcium Urine Timed Estimated
 
Hours Collected - Prompt
30211-7 
Volume 24 Urine Prompt
 
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 1 mL (0.5) Urine, 24-hour 24 hour Urine Container See Instructions
Instructions Timed urine collection, No preservatives, Refrigerate during and after collection.
Record number of hours and volume in mL on the specimen container.
2 - 25 ml of 6 N HCL or 3 - 10 ml of boric acid are acceptable preservatives if collecting with another test.
Stability: Ambient 2 days, Refrigerated 4 days, Frozen 3 weeks
GENERAL INFORMATION
Testing Schedule Daily 
Expected TAT 1-2 days  
Clinical Use Useful for identification of abnormal physiologic states causing excess or suppressed excretion of calcium, such as hyperparathyroidism, Vitamin D abnormality, diseases that destroy bone, prostate cancer and drug treatment such as thiazide therapy. 24 hour collection. 
CPT Code(s) 82340, (81050 if urine measured by RML)
Service Provided By Labcorp Oklahoma, Inc.
Lab Section Chemistry