Phosphate, 24-Hour Urine without Creatinine

Phosphate, 24-Hour Urine without Creatinine

Test Code

11319
84105
11319
84105
Not offered in Quest Diagnostics Nichols Institute (IFD) – San Juan Capistrano. Please provide SERVICE AREA INFORMATION to confirm Test Code for the lab that services your account or to find available tests you can order.
In-home collection is not available in your area through Quest Mobile.

Clinical Significance

Phosphate, 24-Hour Urine without Creatinine - Phosphorus is present in many foods with a mean intake of approximately 1500 mg per day for adult males and about 1000 mg per day for adult females. Absorbed phosphate, under the influence of parathyroid hormone is readily excreted in the kidney. Measurement of urinary phosphorus generally reflects dietary intake, hence, day-to-day excretion may show considerable variation.

Test Resources

None found for this test
Please visit our Clinical Education Center to stay informed on any future publications, webinars, or other education opportunities.

Test Details

Includes

  • CPT code 81050 may be added at an additional charge for volume measurement

Methodology

Spectrophotometry (SP)

Reference Range(s)

Male 360-1600 mg/24 h
Female 170-1200 mg/24 h

LOINC® Codes, Performing Laboratory

Service Area must be determined
CPT code 81050 may be added at an additional charge for volume measurement

Methodology

Spectrophotometry (SP)

Reference Range(s)

Male 360-1600 mg/24 h
Female 170-1200 mg/24 h
Service Area must be determined

Preferred Specimen(s)

10 mL urine aliquot from a well-mixed, 24-hour urine collection

Alternative Specimen(s)

Aliquot from a well-mixed unpreserved 24-hour collection (keep refrigerated during and after collection) • Urinalysis transport tube (yellow-top, blue fill line, preservative tube)

Minimum Volume

2 mL

Collection Instructions

Refrigerate during and after collection. Collect urine with 25 mL of 6N HCl to maintain a pH <3. Do not include first morning specimen; collect all subsequent voidings. The last sample collected should be the first morning specimen voided the following morning at the same time as the previous morning’s first voiding. Specify 24-hour total volume and collection duration on container and test requisition.

Transport Container

Plastic urine container

Transport Temperature

Preserved: Room temperature
Unpreserved: Refrigerated (cold packs)

Specimen Stability

  • Preserved
  • Room temperature: 6 months
  • Refrigerated: 6 months
  • Frozen: 6 months
  •  
  • Unpreserved
  • Room temperature: 48 hours
  • Refrigerated: 7 days
  • Frozen: 28 days

Setup Schedule

Service Area must be determined
10 mL urine aliquot from a well-mixed, 24-hour urine collection
Aliquot from a well-mixed unpreserved 24-hour collection (keep refrigerated during and after collection) • Urinalysis transport tube (yellow-top, blue fill line, preservative tube)
2 mL
Refrigerate during and after collection. Collect urine with 25 mL of 6N HCl to maintain a pH <3. Do not include first morning specimen; collect all subsequent voidings. The last sample collected should be the first morning specimen voided the following morning at the same time as the previous morning’s first voiding. Specify 24-hour total volume and collection duration on container and test requisition.
Plastic urine container
Preserved: Room temperature
Unpreserved: Refrigerated (cold packs)
Preserved
Room temperature: 6 months
Refrigerated: 6 months
Frozen: 6 months

Unpreserved
Room temperature: 48 hours
Refrigerated: 7 days
Frozen: 28 days
Service Area must be determined
Not offered in Quest Diagnostics Nichols Institute (IFD) – San Juan Capistrano. Please provide SERVICE AREA INFORMATION to confirm Test Code for the lab that services your account or to find available tests you can order.
In-home collection is not available in your area through Quest Mobile.
Test Details

Clinical Significance

Test Resources

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 guidance 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.

This material contains content from LOINC® (http://loinc.org). The LOINC Table, LOINC Table Core are copyright © 1995-2019, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee and is available at no cost under the license at http://loinc.org/license.

The tests listed by specialty and category are a select group of tests offered. For a complete list of Quest Diagnostics tests, please adjust the filter options chosen, or refer to our Directory of Services.

Customize the test information for your Service Area
We'd love your feedback! Take a brief survey.