| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
PHOSPHORUS/CREATININE RATIO, URINE
Test CodeLAB427
Quest Code
1696
CPT Codes
84105, 82570
Preferred Specimen
10 mL random urine
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 Container
Plastic urine container
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)
Reference Range
See Laboratory Report
Performing Laboratory
| Quest Diagnostics-Lenexa |
| 10101 Renner Blvd |
| Lenexa , KS 66219-9752 |
Last Updated: September 8, 2021
