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Creatinine Clearance, 24 Hour Urine

eDH Procedure Code(s)

LAB1773 Creatinine Clearance, Serum and 24 Hour Urine

Test Information

Plasma creatinine must be drawn within the time frame of 24 hours prior to the beginning of urine collection, or no later than 24 hours after completion of the urine collection.

Collection Questions

  • Enter duration of urine collection (hr)
  • Enter volume of urine collected (ml)

Collection Information

No Serum Creatinine collection will be requested for patients that have had a Serum Creatinine result in the last 24 hours.
24 hour urine collection without preservative. Keep the 24 hour specimen refrigerated throughout the entire collection period.

Specimen Information

Specimen Type Specimen Source Acceptable Containers Minimum Test Volume (mL)
Urine Urine, 24 Hour 24hUr-R 0.1

Shipping and Handling

Processing Instructions: No pH Adjustment.
If urine must be collected with a preservative for other analytes, only hydrochloric acid (14 to 47 mmol/L urine, e.g. 5mL 10 % HCl or 5mL 30 % HCl per liter urine) or boric acid (81 mmol/L, e.g. 5g per liter urine) may be used.

Transport Temperature: Refrigerated
Transport Instructions: N/A

Specimen Stability Unprocessed
Unprocessed: N/A
Specimen Stability Post Processing
Ambient: 2 Days
Refrigerate: 6 Days
Frozen: 6 Months

Test Components

Component LOINC Code
CREATININE CLEARANCE, 24 HOUR URINE 2164-2
CREATININE, 24 HOUR URINE 2162-6
TIME COLLECTED 74751-9
TOTAL VOLUME 3167-4

Turnaround Time (TAT)

STAT 1 Hour
Routine 4 Hours

CPT Code(s)

81050

Performing Lab Section

Chemistry

Performing Lab(s)

Cheshire Medical Center Laboratory (CHE)
Dartmouth Hitchcock Medical Center Laboratory (MHMH)