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HelpTest Code LAB2010 Pancreatic Polypeptide, Plasma
Additional Codes
HPP
Useful For
Detecting pancreatic endocrine tumors
Assessing vagal nerve function after meal or sham feeding
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Specimen Type
Plasma EDTAOrdering Guidance
This test should not be requested on patients who have recently received radioactive materials.
Necessary Information
Patient's age must be provided.
Specimen Required
Patient Preparation: Fasting (8 hours)
Supplies: Sarstedt Aliquot Tube, 5 mL (T914)
Collection Container/Tube: Lavender top (EDTA)
Submission Container/Tube: Plastic vial
Specimen Volume: 3 mL
Collection Instructions:
1. Place specimen on wet ice and keep cold at all times following collection.
2. Centrifuge (refrigerated centrifuge is not required) and aliquot plasma into a plastic vial. Freeze immediately.
Specimen Minimum Volume
0.35 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Plasma EDTA | Frozen (preferred) | 90 days | |
| Refrigerated | 14 days | ||
| Ambient | 7 days |
On-campus collections: Tube to 99 or deliver to University Extension Hospital Room EH318
Submission tube: Plastic vial, Frozen.
Off-campus collections: Centrifuge and freeze aliquot immediately. Specimen to be stored/transported Frozen.
Reference Values
0-19 years: Not established
20-29 years: <228 pg/mL
30-39 years: <249 pg/mL
40-49 years: <270 pg/mL
50-59 years: <291 pg/mL
60-69 years: <312 pg/mL
70-79 years: <332 pg/mL
≥80 years: Not established
Day(s) Performed
Monday, Wednesday
CPT Code Information
83519
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| HPP | Pancreatic Polypeptide, P | 2721-9 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 8014 | Pancreatic Polypeptide, P | 2721-9 |
Interpretation
High levels of pancreatic polypeptide may be seen in pancreatic endocrine tumors, diabetes, and a nonfasting state. Markedly elevated levels may be seen in some pancreatic exocrine tumors.
A normal response to a sham feeding consists of a rapid pancreatic polypeptide rise over baseline followed by a return to baseline. With vagal damage, no increase over baseline is seen.
Method Description
A radioimmunoassay technique is used. The assay system utilizes rabbit-antihuman pancreatic polypeptide (PP) antiserum, a standard or patient plasma specimen, and radiolabeled human PP that has been iodinated by a modified Hunter-Greenwood technique.(Unpublished Mayo method)
Report Available
4 to 8 daysSpecimen Retention Time
2 weeksReject Due To
| Gross hemolysis | Reject |
| Gross lipemia | Reject |
| Gross icterus | OK |
Method Name
Radioimmunoassay (RIA)
Forms
If not ordering electronically, complete, print, and send an Oncology Test Request (T729) with the specimen.