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Test Code POU Phosphorus, 24 Hour, Urine

Reporting Name

Phosphorus, 24 HR, U

Useful For

Evaluation of hypo- or hyper-phosphatemic states

 

Evaluation of patients with nephrolithiasis

Method Name

Molybdic Acid

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Specimen Type

Urine


Necessary Information


24-Hour volume (in milliliters) is required.



Specimen Required


Supplies: Sarstedt 5 mL Aliquot Tube (T914)

Collection Container/Tube: 24-Hour graduated urine container with no metal cap or glued insert

Submission Container/Tube: Plastic, 5 mL tube or a clean, plastic aliquot container with no metal cap or glued insert

Specimen Volume: 4 mL

Collection Instructions:

1. Collect urine for 24 hours.

2. Refrigerate specimen within 4 hours of completion of 24-hour collection.

Additional Information: See Urine Preservatives-Collection and Transportation for 24-Hour Urine Specimens for multiple collections.


Specimen Minimum Volume

1 mL

Specimen Stability Information

Specimen Type Temperature Time
Urine Refrigerated (preferred) 14 days
  Frozen  30 days
  Ambient  7 days

Reject Due To

All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.

Reference Values

≥18 years: 226-1,797 mg/24 hours

Reference values have not been established for patients who are less than 18 years of age.

Day(s) Performed

Monday through Sunday

CPT Code Information

84105

LOINC Code Information

Test ID Test Order Name Order LOINC Value
POU Phosphorus, 24 HR, U 2779-7

 

Result ID Test Result Name Result LOINC Value
POUU Phosphorus, 24 HR, U 2779-7
TM12 Collection Duration 13362-9
VL10 Urine Volume 3167-4

Test Classification

This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.

Report Available

1 to 3 days