16 days
Electrochemiluminescence (ECL)
Accredited Laboratory Partner
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High-sensitivity test for very low levels of insulin production. Useful in long-standing type 1 diabetes.
Serum (preferred) or Plasma
1 mL
Gel-barrier tube, red-top tube, or lavender-top (EDTA) tube
No special preparation is required for this test. You may eat, drink, and take your medications as normal, unless instructed otherwise by your healthcare provider.
Serum or plasma must be separated from cells within 45 minutes of venipuncture. Submit specimen in a plastic transport tube. Freeze plastic transport tube (preferred) or refrigerate. To avoid delays in turnaround time when requesting multiple tests on frozen samples, please submit separate frozen specimens for each test requested.
| Temperature | Period |
|---|---|
| Room temperature | 1 day |
| Refrigerated | 7 days |
| Frozen | 1 year |