Amylase - urine
Last updated: Wednesday, 07, April, 2004
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| Item | Process |
|---|---|
| Specimen | Timed or 24 hour urine collection with no preservative. |
| Method | Spectrophotometry. |
| Reference Interval | Method dependent - consult pathologist. |
| Application | Rarely indicated. Suspected acute pancreatitis with normal serum amylase. Persistent, significant elevation of serum amylase if macroamylasaemia is suspected. |
| Interpretation | Urine level may be increased in acute pancreatitis at a time when the serum amylase level has returned to within the reference interval. High serum and low urine amylase levels are seen in macroamylasaemia. Use of an amylase/creatinine clearance ratio is not recommended. |
| Reference | Yadav D et al. Am J Gastroenterol. 2002; 97(6):1309-1318. |