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HelpTest Code Billings Clinic: 8381 Mayo: AMLPC Amylase, Pancreatic Cyst Fluid
Reporting Name
Amylase, Pancreatic CystPerforming Laboratory
Mayo Clinic Laboratories in Rochester
Useful For
Aiding in distinguishing between pseudocysts and other types of pancreatic cysts when used in conjunction with imaging studies, cytology, and other pancreatic cyst fluid tumor markers
Method Name
Substrate Kinetic
Ordering Guidance
For other body fluid specimens (eg, peritoneal, pleural), order AMBF / Amylase, Body Fluid. Testing will be changed to AMBF if this test is ordered on any fluid other than pancreatic fluid.
Specimen Required
Supplies: Sarstedt Aliquot Tube, 5 mL (T914)
Container/Tube: Plain vial
Specimen Volume: 1 mL
Additional Information: A minimum of 0.5 mL is required for testing; specimens less than 0.5 mL may be rejected.
Specimen Type
Pancreatic Cyst FluidSpecimen Minimum Volume
0.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Pancreatic Cyst Fluid | Frozen (preferred) | 30 days | |
| Ambient | 7 days | ||
| Refrigerated | 7 days |
Reject Due To
| Gross hemolysis | Reject |
Reference Values
An interpretive report will be provided.
Interpretation
A pancreatic cyst fluid amylase concentration of less than 250 U/L indicates a low risk of a pseudocyst and is more consistent with cystic neoplasms such as mucinous cystic neoplasms (MCN), intraductal papillary mucinous neoplasm (IPMN), serous cystadenomas, cystic neuroendocrine tumor, and mucinous cystadenocarcinoma. High pancreatic cyst fluid amylase values are nonspecific and occur both in pseudocysts and some mucin-producing cystic neoplasms including MCN, IPMN, and mucinous cystadenocarcinoma.
In-house studies showed that using a cutoff value of less than 250 U/L to exclude a pseudocyst has 94% sensitivity and 42% specificity. Cysts with amylase levels of less than 250 U/L included 69% of adenocarcinomas, 31% of intraductal papillary mucinous neoplasia, 55% of mucinous cystadenomas, 64% serous cystadenomas, and 6% of pseudocysts.
Day(s) Performed
Monday through Saturday
Report Available
1 to 3 daysTest Classification
This test has been modified from the manufacturer's instructions. Its performance characteristics were determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the US Food and Drug Administration.CPT Code Information
82150
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| AMLPC | Amylase, Pancreatic Cyst | 48996-3 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| AMYPC | Amylase, Pancreatic Cyst | 48996-3 |
| SITE6 | Site | 39111-0 |
Forms
If not ordering electronically, complete, print, and send 1 of the following forms with the specimen:
-Oncology Test Request (T729)