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, URINE, 24 HOUR
MessageThere is a diurnal variation in urine phosphate excretion with the highest output occurring in the afternoon.
Test Code
PHOUN
CPT Codes
84105
Includes
Phosphorus
Preferred Specimen
24 Hour Urine Container without preservative
(aliquot or transfer urine into a transfer tube and note the total volume)
(aliquot or transfer urine into a transfer tube and note the total volume)
Minimum Volume
5 mL aliquot
Instructions
- Mix the specimen well and measure the 24-Hour volume (RECORD THE TOTAL VOLUME)
- Pour off 20 mL of urine into a separate plastic screw-cap container
- Refrigerate if not tested immediately
- Sample will be acidified by Central Lab staff with 6N HCL to a pH <2 prior to testing.
Transport Temperature
Refrigerate
Specimen Stability
- Urine may contain larger quantities of organic phosphates, which can decompose upon exposure to elevated temperatures. Keep refrigerated.
- 2-8°C up to 7 days; once acidified, urine is stable up to 6 months.
Methodology
Colorimetric
Setup Schedule
M, T, W, Th, F, Sa, Sun
Report Available
Same day tested by performing laboratory.
Reference Range
Age | g/24 Hours (Urine) |
---|---|
Adults | 0.3 - 1.3 |
Children | 1.5 - 0.8 |
Clinical Significance
Measurements of inorganic phosphorus are used in the diagnosis and treatment of various disorders including parathyroid gland and kidney diseases, and Vitamin D imbalance.
Performed By
Alverno Laboratories
Performing Laboratory
Alverno Central Lab
NCHB1 (Chemistry, Beckman AU)
Additional Information
24 Hour Urine Collection
Last Updated: July 5, 2023