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Test Code URPHOT or LAB426 Phosphorus, 24-Hour, Urine

Profile Information

Test ID

Reporting Name

Always Performed?

Available Separately?

URPHOT

Phosphorus, 24 Hr Urine

Y

N

UPHOR

Phosphorus, Random Urine

Y

Y

Coll Dur

Collection Duration

Y

N

Ur Vol

Urine Volume

Y

N

Specimen Requirements

Container Type:

 

24-hour urine container

 

   

 
Optimal Collection Volume: 

Entire Collection
Minimum Volume:

Entire Collection
Collection Instructions:
  1. Please click the Mayo link for a complete list of acceptable preservatives.
  2. Refrigerate the container during the collection period.
  3. The 24-hour volume is required.
  4. The start and end dates and times of collection are required.
  5. Please click the Urine Collection and Patient Instructions for 24-Hour Urine Collection links for additional collection instructions.
Specimen Transport:

Refrigerate
Processing Instructions: 
  1. Measure and record the total volume of the urine collection.
  2. Vigorously shake the entire container of urine to ensure that all of its contents are adequately mixed before pouring off aliquots.
  3. Pour off two aliquots into clean, unused urine cups.
  4. One aliquot should not be acidified—label as such. This is done in case add-ons are requested that cannot have acidified urine.
  5. Acidify the other aliquot to a pH of < 3.0.
  6. Mix well and pour off a 2.0 mL acidified aliquot into a false bottom tube.
  7. Centrifuge the false bottom tube. 

Specimen Stability

Specimen Type

Temperature

Time

Urine

Refrigerated

6 months (acidified)

Specimen Rejection Criteria

No total volume recorded or no start and end times.

Methodology

Roche Cobas - Spectrophotometric

Reference Ranges

900-1,300 mg/ 24 hour

Day(s) Performed

24/7

Expected TAT

Same day

Performing Laboratory

Bronson Laboratory, Chemistry - Kalamazoo and Battle Creek

Sample Retention Time

7 days

CPT Code

  • Phosphorus - 84105
  • Volume measurement - 81050

LOINC Code

2778-9