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Amylase, 24 HR Urine
Test CodeUAM24
Alias/See Also
UAMY1: Urine Amylase
UAMYC: Amylase/HR
UHOUR: Hours of collection
UVOL: Urine Volume
UAMYC: Amylase/HR
UHOUR: Hours of collection
UVOL: Urine Volume
CPT Codes
82150, 81050
Includes
Amylase Urine Random, Volume measurement, 24 hour calculation
Preferred Specimen
URINE Timed (UTO)
Other Acceptable Specimens
Non-acidified urines, timed collections.
Instructions
Patient instructions for 24 hour collection
Stress to the patient that for accurate test results on a 24 hour urine sample it is important for a complete and accurate collection be made.
Instruct patient to drink the same amount of liquid during the collection period that they normally consume, unless otherwise instructed by their physician. No alcoholic beverages should be consumed at this time.
Instructions to patient:
Stress to the patient that for accurate test results on a 24 hour urine sample it is important for a complete and accurate collection be made.
Instruct patient to drink the same amount of liquid during the collection period that they normally consume, unless otherwise instructed by their physician. No alcoholic beverages should be consumed at this time.
Instructions to patient:
- Select a convenient time for starting the collection. You must finish the collection at the same time 24 hours later.
- Empty your bladder and discard this urine. Note the date and time you did this.
- From this time on, collect ALL urine you pass during the day and night for the duration of the 24 hour period. Pour this urine into the container provided by the Laboratory.
- Keep the urine refrigerated or on ice throughout the collection process.
- At exactly 24hours from the start of collection (see time documented in #2), empty you bladder. Note the date and time:
- After collection is complete, bring the urine and instruction sheet to the Laboratory as soon as possible.
Specimen Stability
Urine: An acid pH may make the enzyme less stable; therefore, pH should be adjusted to approximately 7.0 before storage.
Methodology
Beckman AU
Reference Range
- Random Urine Amylase: 0-650 IU/L
- Timed Urine: 0-15 IU/L/HR
Clinical Significance
Amylase is a relatively small protein and is therefore filtered readily into the urine. The enzyme can be found in increased concentrations in the urine for longer periods of time than in the serum. An amylase content determined on a 2-hour urine collection is an excellent test for detecting pancreatitis.
Performing Laboratory
CRMC Laboratory
