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24 HR URINE BUN
MessageCHEMISTRY
Test Code
24 HR UA BUN
Alias/See Also
URINE BUN, BUN 24 HR URINE , 24HR
Includes
TOTAL VOLUME, UREA NITROGEN
Preferred Specimen
URINE
Minimum Volume
10mLs
Instructions
COLLECT URINE IN A 24 HR JUG PROVIDED BY LAB. MAKE SURE FULL NAME, FULL SSN, AND DATES/TIMES THE URINE WAS COLLECTED.*** FIRST MORNING URINE OF FIRST DAY SHOULD NOT BE COLLECTED, ONLY FIRST MORNING URINE OF SECOND MORNING NEEDS TO BE COLLECTED. NEEDS TO BE REFRIGERATED WHEN NOT URINATING IN JUG. MAKE SURE FULL NAME, FULL SSN, DATES/TIMES WHEN STARED AND STOPPED COLLECTION IS ON LABEL.
Transport Container
24 HR URINE JUG SUPPLIED BY THE LAB.
Transport Temperature
REFRIGERATED
Specimen Stability
Room temperature: 2 days
Refrigerated (2-8°C): 6 days
Frozen (-20°C or colder): 6 months
Refrigerated (2-8°C): 6 days
Frozen (-20°C or colder): 6 months
Methodology
Kinetic Jaffe
Setup Schedule
DAILY:M-F
Report Available
24-48 HRS
Reference Range
600 - 2000 mg/24hr
Clinical Significance
Creatinine is the endproduct of creatinine metabolism. Creatinine is present primarily in muscle and the amount of creatinine produced is related to total skeletal muscle mass. Daily creatinine production is fairly constant except when there is a massive injury to muscle. The kidneys excrete creatinine very efficiently and blood levels and daily urinary excretion of creatinine fluctuate very little in healthy normal people. Since blood and daily urine excretion of creatinine show minimal fluctuation, creatinine excretion is useful in determining whether 24-Hour urine specimens for other analysis (e.g., Protein) have been completely and accurately collected.
Performing Laboratory
WHITE RIVER JUNCTION VT VA-CHEMISTRY 802-295-9363 EXT: 5518, 5519
