Laboratory Test Information Guide

Details for Calcium, 24-Hour Urine

Test Name: Calcium, 24-Hour Urine
Alternate Name(s):  
Laboratory: Core
Specimen Type: 24 Hour urine
Collection Information: Collection of 24-Hour Urine Sample

The sample does not have to be collected on acid.

If sample is not collected in a container with acid,then urine will be acidified in the laboratory by adding 0.5 mL 6N HCL to 10 mL urine.

Note: Refrigerate sample.

Frozen specimen is unacceptable.

Please complete the laboratory label attached to the collection bottle to include patientís name, collection start time and date and collection end time and date.
Requisition: GENERAL LABORATORY REQUISITION
Test Schedule: Monday - Friday
0800 - 1600 h
Turnaround time from when specimen
is received in testing laboratory:
 
Routine
4 hours
Stat
 
 
Reference Range: 2.5-7.5 mmol/d
Effective Date:  
Revised Date: 2019-02-21
Critical Value:  
Interpretive Comments: Increased in most cases of hypercalcemia and in some normocalcemic states, e.g. subtle hyperparathyroidism or idiopathic hypercalcuria. Urine calcium excretion is regulated by dietary intake, plasma calcium level, G.F.R. and PTH levels.
Special Processing:  
Comments:  
Method of Analysis: Endpoint Colorimetric assay
Critical Information Required:  
Storage & Shipment:  
System Codes: 
Cerner
CAU24
 
Referred To:  

Questions? Comments? Contact Laura Gopaul