Phosphorus, Urine Timed

Test Mnemonic


CPT Codes

  • 84105 - QTY (1)



Performing Laboratory

Cleveland Clinic Laboratories

Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
5 mLUrine, timed (well-mixed)Clean containerRefrigerate during collection.RefrigeratedIndicate hours of collection and volume on requisition.


Environmental Condition Description
Ambient1 week
Frozen1 week
Refrigerated6 months when acidified

Days Performed

Mon - Fri

Turnaround Time

8 hours


Name Description
Ammonium Molybdate 

Reference Range

Phosphorus, Urine Timed
Sex Age From Age To Type Range Range Unit
       Normal38 - 54mg/hr

Special Info

Refrigerate during collection. Indicate hours of collection.

Clinical Info

Evaluation of electrolyte disorders, kidney function, kidney stone risk.