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Test ID FELAS Elastase, Pancreatic, Serum


Specimen Required


Patient Preparation: The patient should fast for 10 to 12 hours prior to collection of specimen. Medications that affect pancreatic activity should be discontinued, if possible, for at least 48 hours prior to collection of specimen.

Collection Container/Tube: Red top

Submission Container/Tube: plastic vial

Specimen Volume: 3 mL

Collection Instructions: Draw blood in a plain, red-top or a serum gel tube(s). Separate immediately and send 3 mL of serum frozen in a plastic vial.


Forms

If not ordering electronically, complete, print, and send Gastroenterology and Hepatology Test Request (T728) with the specimen.

Method Name

Direct Radioimmunoassay (RIA)

Reporting Name

Elastase (Pancreatic Elastase 1), S

Specimen Type

Serum

Specimen Minimum Volume

1 mL

Specimen Stability Information

Specimen Type Temperature Time
Serum Frozen (preferred) 365 days
  Refrigerated  7 days
  Ambient  72 hours

Clinical Information

Serum Elastase, also called Pancreatopeptidase, is a protease present in pancreatic secretion with the unique ability to rapidly hydrolyze elastin. Elastin is a fibrillar protein found in connective tissue. Elastin forms the elastic fibers found mostly in lungs and skin. Elastase is able to hydrolyze denatured hemoglobin, casein, fibrin, albumin and denatured but not native collagen. Elastase has been implicated in the pathogenesis of pulmonary emphysema, atherosclerosis and in the vascular injury of acute pancreatic necrosis. Elastase activity is inhibited by protease inhibitors including a1-Anti-Trypsin, a1-anti-Chymotrypsin, anti-Thrombin III, a2-Macroglobulin and b1-anti-Collagenase. Patients with thyroid dysfunction have decreased Elastase activity. Serum pancreatic levels quantify EL 1 for the diagnosis or exclusion of an acute pancreatitis or an inflammatory episode of chronic pancreatitis or gallstone induced pancreatitis.

Reference Values

Adult Reference Ranges:

Normal pancreatic exocrine function:

Less than 3.5 ng/mL

 

No pediatric reference ranges available for this test.

Day(s) Performed

Monday through Friday

Report Available

12 to 14 days

Performing Laboratory

Inter Science Institute

CPT Code Information

83519

NY State Approved

No