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#5308U: Phosphorus 24 hour Urine

COMPONENTS
Name Method Reference Range Units
Phosphorus 24 Hr Urine CALC Male: 360 - 1600
Female: 170 - 1200
mg/24hr
Total Volume mL

SPECIMEN REQUIREMENTS
No Type Volume Temperature Container Type Instructions
1 Urine 24 hour 10 (2) mL Refrigerated - 7 Day(s)/Frozen - 28 Day(s)/Room Temperature - 48 Hour(s) Sterile  
2 Urine HCL Additive 10 (2) mL Room Temperature - 6 Month(s)/Refrigerated - 6 Month(s)/Frozen - 6 Month(s) Sterile  
3 Urinalysis Transport Tube 10 (2) mL Frozen - 6 Month(s)/Room Temperature - 6 Month(s)/Refrigerated - 6 Month(s) Yellow-Top  

GENERAL INFORMATION
Setup Schedule Monday-Saturday
Turn-Around Time Same day
CPT Code 84105
Notes Also availible Phosphorus Urine Random, #5308UR.
Performing Lab Specialty Laboratories
Test Performed Stat No
Clinical Utilities 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.

Collection Instructions
  Collect urine with 25 mL of 6N HCL to maintain a pH below 3. 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 on container
and test requisition. Transport room temperature.