Home
HelpTest Code INSU Insulin Level Total
EHR Test Codes
| Test Code | Test Name | |
| Atlas | INSU | Insulin |
| Cerner | Insulin Level Total |
Specimen Requirements
Preparation of Patient:
None
Container Type:
Gold Top SST Gel & Clot Activator Tube
Specimen Type:
Serum
Specimen Volume:
1.0 mL of Serum minimum .5 mL of Serum
Specimen Handling/Transport:
Separate serum from cells within 2 hours of collection.
Transport refrigerated 2-8°C
Specimen Stability/Storage:
4 hours ambient room temperature
1 day refrigerated 2-8°C
>1 day frozen -20°C
Specimen Rejection:
Hemolysis
Performing Laboratory
Munson Medical Center Laboratories
Chemistry Department
Priority, Frequency, & Turnaround
Priority:
Non-Emergent
Frequency:
24 hours 7 days a week
Turnaround:
0 - 1 days
Methodology
Chemiluminescent Immunoassay
Reporting
Reference Range:
1.9 - 23 uIU/mL
Critical Decision:
None
Clinical Significance
Insulin is a two peptide hormone which is secreted by the B cells of the pancreas and passes into circulation via the portal vein and the liver. The action of insulin is mediated by specific receptors and primarily consists of facilitation of the uptake of sugar by the cells of the liver, fatty tissue and musculature. Serum insulin determinations are mainly performed on patients with symptoms of fasting hypoglycemia where increased insulin levels strongly suggests an islet cell tumor. Too low a concentration of free, biologically active insulin can lead to the development of diabetes mellitus. Free insulin measurements should be comparable to routine insulin values in the absence of insulin antibodies.
CPT Code
83525