CPT/HCPCS
84105
Order Code
CH170
Turnaround Time
24-48 hours
Test Includes
Phosphorus, Urine
Specimen Requirements
Specimen Source
Urine
Transport Container
(Specimen Container)
(Specimen Container)
Plastic urine container
Preferred Specimens
Random urine
Minimum Volume (uL)
2 mL
Collection Instructions
(Transport Temperature)
(Transport Temperature)
Preserved: Room temperature Unpreserved: Refrigerated (cold packs)
Specimen Stability
| Temperature | Period |
|---|---|
| Room temperature | Preserved = 6 months; Unpreserved= 48 hours |
| Refrigerated | Preserved = 6 months; Unpreserved= 7 days |
| Frozen | Preserved = 6 months; Unpreserved= 28 days |
Special Instructions
Adjust pH to <3.0 with 6N HCl prior to aliquoting for phosphate testing
Alternative Specimen(s)
Urinalysis transport tube (yellow-top, blue fill line, preservative tube). Transport preserved urine at Room Temperature. Transport Unpreserved urine Refrigerated.
Test Details
Methodology
Spectrophotometry (SP)_x000D_
Clinical Significance
Phosphate, Random 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.
Reference Ranges
Not established
