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URINE CREATININE, 12 HOUR
MessageCollect a 12 hour urine specimen. NOTE: If the urine collection exceeds 13 hours or is below 11 hours, collection cannot proceed. The patient must recollect their urine sample. Step 1: Empty the bladder at the start of collection, this urine is discarded. Step 2: Collect all urine after the initial void int he collection container . Step 3: Measure and record the 12-hour volumeStep 4: Record the exact start and completion times of the 12-hour collection on the container label.
Test Code
LAB2438 UCR12
Alias/See Also
UCR12
CPT Codes
82570| 81050
Instructions
Processing Instructions (Lab use only): Aliquot into sterile tube. Minimum Testing Volume: 1 mL Urine Transport Temperature: Refrigerated Stability: Ambient: 2 daysRefrigerated : 6 daysFrozen: 6 months Causes for Rejection: Unlabeled, mislabeled, wrong tube type, large amount of free hemoglobin, and/or bilirubin, QNS, exceeds specimen/stability requirements.
Clinical Significance
1230130246
Last Updated: May 18, 2026