Home
HelpTest Code INSLNPD Insulin Post Dose
Specimen Requirements
| Fasting Required | Specimen Type | Preferred Container/Tube | Acceptable Container/Tube | Specimen Volume | Specimen Minimum Volume (allows for 1 repeat) |
Pediatric Minimum Volume (no repeat) |
|---|---|---|---|---|---|---|
| No | Serum | Serum Separator Tube (SST) | Red Top Tube (RTT) | 0.5 mL | 0.3 mL | 0.25 mL |
Collection/Processing Instructions
Samples collected in a RTT must be removed from clot within one hour for storage or transport.
Samples collected in gel barrier tubes must be removed from the primary tube prior to transporting to Marshfield.
Do not send the primary collection tube.
When ordering this test, you will be asked to enter a comment relaying the dosing regimen and timing information (Example: 60 minutes post glucola).
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum | Ambient | 8 hours |
| Refrigerated | 24 hours | |
| Frozen | >24 hours |
Rejection Criteria
Grossly hemolyzed
Test Information
Patients on long-term insulin therapy may have anti-insulin antibodies which will falsely lower insulin results. Insulin assay measures exogenous as well as endogenous insulin; measurement of C-peptide may be helpful in differentiating the insulin source and in assessing the cause of hypoglycemic states.
Note: after 48 hours of refrigeration, insulin loses about 10% of its activity.
Interpretations
All results will be reported with the standard fasting insulin reference range. It is not related to any specific dosing regimen.
Reference Range Information
| Performing Location | Reference Range |
|---|---|
| Marshfield | Fasting: 2.6 - 37.6 uU/mL |
Marshfield Labs Performing Department
Marshfield Labs Chemistry
Performing Information
| Performing Location | Day(s) Test Performed | Analytical Time | Methodology/Instrumentation |
|---|---|---|---|
| Marshfield | Monday through Friday | 1 day | Two-site Sandwich Immunoassay using Direct Chemiluminometric Technology/Siemens Centaur |
CPT Codes
| CPT | Modifier (if needed) |
Quantity | Description | Comments |
|---|---|---|---|---|
| 83525 |
Outreach CPT Codes
| CPT | Modifier (if needed) |
Quantity | Description | Comments |
|---|---|---|---|---|
| 83525 |
Ordering Applications
| Ordering Application | Description |
|---|---|
| Cerner | Insulin, Post Dose |