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- Ordering Info
To view specimen requirements and codes please select your laboratory:
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Calcium, 24-Hour Urine (with Creatinine) [1635X]
10 mL aliquot of a well-mixed, 24-hour collection
Urinalysis transport tube (yellow-top, blue fill line, preservative tube)
Collect a 10 mL aliquot of a well-mixed, 24-hour urine collection. Collect urine with 25 mL of 6N HCl to
maintain a pH below 3. It is acceptable to add preservative after collection, if urine is refrigerated during collection. Adjust pH to < 3.0. Record total volume and collection time on specimen container and requisition. Unpreserved urine: send refrigerated (cold packs).
Room temperature: 5 days
Refrigerated: 35 days
Frozen: 6 months
|Quest Diagnostics Nichols Institute|
|14225 Newbrook Drive|
|Chantilly, VA 20153|
Set up: Daily; Report available: Next day
Oral contraceptive use may depress results.
Unrestricted Calcium Diet
|Male||55-300 mg/24 h|
|Female||35-250 mg/24 h|
|Male||55-200 mg/24 h|
|Female||35-200 mg/24 h|
|Male||30-210 mg/g creat|
|Female||30-275 mg/g creat|
Creatinine, 24-Hour Urine
|<36 Months||Not established|
|36 Months-8 Years||0.11-0.68 g/24 h|
|9-12 Years||0.17-1.41 g/24 h|
|13-17 Years||0.29-1.87 g/24 h|
|>17 Years||0.63-2.50 g/24 h|
Abnormal levels are found in hyperparathyroidism, hyperthyroidism and Paget's Disease.
The Result and LOINC information listed below should not be used for electronic interface maintenance with Quest Diagnostics. Please contact the Quest Diagnostics Connectivity Help Desk for more information at 800-697-9302.NOTE: The codes listed in the table below are not orderable Test Codes.
|Result Name||LOINC Code||Component Name|
|0016||Total Volume||3167-4||Specimen volume|
|14424A||Creatinine, 24-Hour Urine||2162-6||Creatinine|
|15830A||Calcium, 24-Hour Urine||6874-2||Calcium|
Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.
The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.
LOINC assignment is based on a combination of test attributes, including the method used by the performing laboratory. For tests not performed by Quest Diagnostics, codes are assigned by the performing laboratory.
* The tests listed by specialist are a select group of tests offered. For a complete list of Quest Diagnostics tests, please refer to our Directory of Services.