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Phosphate, Random Urine with Creatinine
Test CodePHOSPHATE R/U
Quest Code
1696
CPT Codes
84105, 82570
Preferred Specimen
10 mL random urine collected in a plastic urine container
Minimum Volume
2 mL
Other Acceptable Specimens
Unpreserved urine collected in urinalysis transport tube (yellow-top, blue fill line, preservative tube) • Preserved urine with 6N HCl acid submitted in a plastic urine container
Instructions
Adjust pH to <3.0 with 6N HCl prior to aliquoting for phosphate testing
Transport Temperature
Preserved: Room temperature
Unpreserved: Refrigerated (cold packs)
Unpreserved: Refrigerated (cold packs)
Specimen Stability
Preserved
Room temperature: 6 months
Refrigerated: 6 months
Frozen: 6 months
Unpreserved
Room temperature: 48 hours
Refrigerated: 7 days
Frozen: 28 days
Room temperature: 6 months
Refrigerated: 6 months
Frozen: 6 months
Unpreserved
Room temperature: 48 hours
Refrigerated: 7 days
Frozen: 28 days
Methodology
Spectrophotometry (SP)
Setup Schedule
P.M. Sets up 2 days a week.
Reference Range
See Laboratory Report
Performing Laboratory
Quest Diagnostics Nichols Institute
33608 Ortega Highway
San Juan Capistrano, CA 92690-6130