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Creatinine, 24 Hr Urine Panel
Test CodeCREATININE,24HR PANEL
Alias/See Also
Chemistry
Preferred Specimen
24 Hr urine collection
Instructions
Preservative: No preservative necessary. The preferred preservatives are boric acid and hydrochloric acid.
Refrigerate during collection.
Refrigerate during collection.
Transport Temperature
Refrigerate
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
Report Available
TAT 1 day
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
Test performed in these BACL Chemistry Labs
Contact: Jonathan Dryjowicz-Burek, West Roxbury 857-203-5973
Alternate contact Joseph Manzone, JP 857-364-5092
Additional Information
Collection of 24 Hour Urines or Timed Urines
Last Updated: November 18, 2021
