AMYLASE,24 HOUR URINE

Code
500.1480
Name
AMYLASE,24 HOUR URINE
Category
None
Department
Chemistry
Start Date
Expiration Date
Synonyms
CPT Codes
82150, 81050
Site
Main Lab
Reference Test
ATLAS Test Code

AMY24

Specimen Information

Type

Urine, 24-hour

Volume

5.0 ml

Transport Info

Room Temperature 2 day stability Refrigerated 10 day stability Adjust pH to >7

Fasting Required?
False
Patient Instructions

Reference Range

<300 U/24hr

Methodology

Enzymatic Rate

Clinical Significance

Differential diagnosis of pancreatitis (elevated in about 25% of patients with carcinomas of pancreas). Amylase is filtered by the glomeruli and excreted in the urine. In pancreatitis, an increased urinary excretion rate accounts for the earlier, more frequent, and more prolonged elevation of the enzyme in urine, as compared with blood.

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