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HelpTest Code Billings Clinic: 6961 Mayo: AMISO Amylase, Isoenzymes, Serum
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Useful For
Ruling out salivary amylase as the cause of elevated serum amylase
Profile Information
| Test ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| AMYSE | Amylase, Total, S | Yes, (Order AMS) | Yes |
| AMYPA | Amylase, Pancreatic, S | No | Yes |
| AMYSA | Amylase, Salivary, S | No | Yes |
Testing Algorithm
Total and pancreatic amylase are measured in the submitted serum specimen. Salivary amylase is calculated as the difference between the two measured results (salivary amylase = total amylase-pancreatic amylase).
Method Name
AMYSE, AMYPA: Colorimetric Rate Reaction
AMYSA: Calculation
Reporting Name
Amylase, Isoenzymes, SNecessary Information
Age and sex of patient are required.
Specimen Required
Collection Container/Tube:
Preferred: Serum gel
Acceptable: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 1 mL
Collection Instructions:
1. Serum gel tubes should be centrifuged within 2 hours of collection.
2. Red-top tubes should be centrifuged and the serum aliquoted into a plastic vial within 2 hours of collection.
Specimen Type
SerumSpecimen Minimum Volume
See Specimen Required
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Serum | Refrigerated (preferred) | 30 days | |
| Frozen | 30 days | ||
| Ambient | 7 days |
Reject Due To
| Gross hemolysis | Reject |
Reference Values
AMYLASE, TOTAL
0-30 days: ≤6 U/L
31-182 days: 1-17 U/L
183-365 days: 6-44 U/L
1-3 years: 8-79 U/L
4-17 years: 21-110 U/L
≥18 years: 28-100 U/L
AMYLASE, PANCREATIC
0-<24 months: ≤20 U/L
2-<18 years: 9-35 U/L
≥18 years: 13-53 U/L
AMYLASE, SALIVARY
0-<18 years: Not established
≥18 years: ≤86 U/L
Interpretation
Increased concentrations of total amylase activity in conjunction with increased concentration of specific amylase isoenzymes may aid in differentiating the source of amylase (pancreatic versus salivary).
Day(s) Performed
Monday through Sunday
Report Available
1 to 3 daysTest Classification
This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.CPT Code Information
82150 x 2
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| AMISO | Amylase, Isoenzymes, S | 24333-7 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| AMYPA | Amylase, Pancreatic, S | 1805-1 |
| AMYSA | Amylase, Salivary, S | 1809-3 |
| AMYSE | Amylase, Total, S | 1798-8 |
Forms
If not ordering electronically, complete, print, and send Gastroenterology and Hepatology Test Request (T728) with the specimen.