Test Code LAB527 Insulin, Plasma or Serum
Additional Codes
46035
Reporting Title
Insulin
Methodology
Roche Diagnostics, Electrochemiluminescence Immunoassay
Insulin is secreted by the B cells of the pancreas. Insulin levels are most useful in diagnosing insulin-secreting insulinomas.
Performing Laboratory
OhioHealth Laboratory Services-RMH Core Chemistry
Specimen Requirements
Submit only 1 of the following specimens:
Preferred:
Serum
Draw blood in a gold-top serum gel tube(s) from a
fasting patient. (Lavender-top [EDTA] tube or hemolyzed
specimen is not acceptable.) Spin down and send 1 mL
of serum refrigerated.
Note:
1. If multiple specimens are drawn, indicate time of draw and sequence of specimen (eg, 1 hour) on request form and specimen.
2. A speckled-top serum gel tube (s) or a plain, red-top tube(s) is also acceptable.
3. Indicate serum on request form.
4. Label specimen appropriately (serum).
Alternate:
Plasma
Draw blood in a mint green-top (heparin) gel tube(s) from a fasting patient. (Lavender-top [EDTA] tube or hemolyzed specimen is not acceptable.) Spin down and send 1 mL of heparinized plasma refrigerated.
Note:
1. If multiple specimens are drawn, indicate time of draw and sequence of specimen (eg, 1 hour) on request form and specimen.
2. Indicate plasma on request form.
3. Label specimen appropriately (plasma).
Specimen Stability Information
Specimen Type | Temperature | Time |
---|---|---|
Serum or plasma | Refrigerated | 24 hours |
Ambient | ||
Frozen | 6 months |
Specimen Transport Temperature
Refrigerate/Frozen OK/Ambient NO
Reference Values
0-20.0 mcIU/mL
Note: Patients on insulin therapy may have insulin antibodies which would interfere with this test.
Day(s) Test Set Up
Monday through Sunday; Continuously
Test Classification and CPT Coding
83525