Phosphate, 24-Hour Urine with Creatinine
What it measures
- Phosphate, 24 Hour UrineLOINC 2779-7
- Phosphate/Creat RatioLOINC 13795-0
- Creatinine, 24 Hour UrineLOINC 2162-6
Specimen
- Specimen
- 10 mL urine aliquot from a well-mixed, 24-hour urine collection
- Minimum volume
- 2 mL
- Also accepted
- Aliquot from a well-mixed unpreserved 24-hour collection (keep refrigerated during and after collection) • Urinalysis transport tube (yellow-top, blue fill line, preservative tube)
- Container
- Plastic urine container
- Temperature
- Preserved: Room temperature Unpreserved: Refrigerated (cold packs)
Refrigerate during and after collection. Collect urine with 25 mL of 6N HCl to maintain a pH Do not include first morning specimen; collect all subsequent voidings. The last sample collected should be the first morning specimen voided the following morning at the same time as the previous morning’s first voiding. Specify 24-hour total volume and collection duration on container and test requisition.
Billing
CPT 82570, 84105