Test Name

Amylase,
Urine

Test Code

221

Unit

U/L

Station

Chemistry

CPT Code

82150

Performing Facility

American Medical Labs, Herzliya
Pituah

Analyzer

Roche cobas 6000

Test Method

Enzymatic

AML Preferred Tube

Routine urinalysis leakproof tube or container, BD urine
transport tube, or sterile urine cup.

Sample collection

 Collect urine in
a screw-cup plastic container or transfer it to a random urine transport
tube. Screw the lid on securely. Transport the specimen promptly to the
laboratory.

Storage Instructions

Refrigerated.

Stability:

2 days at 15 to 25 ^oC

10 days at 2-8
^oC

Min. Volume

1 mL

Comments

Amylase is an enzyme. Unlike serum amylase, urine amylase
levels are normal with renal failure. While serum amylase usually returns
to normal within three to five days,
urine amylase is increased longer than serum amylase in acute
pancreatitis. Two-hour collections are more practical and provide results
sooner than longer collections.
 

Turn-Around-Time

One day.

Intended Use

Work-up for abdominal pain, epigastric tenderness, nausea,
ad vomiting. Urinary amylase is used in the differential diagnosis of
pancreatitis. It is very useful in diagnosis of pseudocyst of the
pancreas, where the urine amylase may remain elevated for weeks after the
serum amylase has returned to normal, after a bout of acute
pancreatitis.

Limitations

Presence of acid preservative (pH <3); improper
labeling

Patient Preparation

No patient preparation
needed

Reasons for Rejection

Improper labeling.

Adult Reference Ranges

Male: 16-491 U/L;

 Female: 21- 447
U/L