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Phosphorus, Urine

CPT Code(s): 84105
Specimen Required: Patient Preparation:
Collect:24-hour urine. Refrigerate specimen during collection. Also acceptable: Random urine.
Specimen Preparation:Mix entire 24-hour collection. Adjust pH to 1.5-2.0 by adding 6M HCl in 1 mL increments. Transfer one 3 mL aliquot from a well-mixed 24-hour collection to an RDL Standard Transport Tube. (Min: 0.5 mL) Record total volume, collection time interval, and pH on transport tube and test request form.
Storage/Transport Temperature:Frozen.
Stability:Ambient: 8 hours; Refrigerated: 48 hours; Frozen: 6 months
New York DOH Approval Status: This test is New York DOH approved.
Aliases:
  • HPO4-2, PO4-3phosphorus urine concentrationInorganic phosphatePhosphorus urine testPhosphorus, urinePO4PO4 urine concentrationPO4 urine levelurine phosphateUrine phosphorus
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