Fasting insulin (revision 1)
Old revision·09:00, 14 Sep 2024·UnitsUrsula
This is an old revision of this page, as it stood at 09:00, 14 Sep 2024, saved by UnitsUrsula with the summary start article; reference intervals to follow. It may differ substantially from the current revision, and any error it contains may since have been corrected.
| Fasting insulin | |
|---|---|
| Specimen | Fasting plasma or serum |
| Interpretable | Only alongside a simultaneous glucose |
| Standardisation | Poor between assays |
| Topic infobox · conventions | |
Fasting insulin is the concentration of insulin measured after an overnight fast. It is widely available and widely over-interpreted: an insulin value alone answers no question, because the same concentration means different things at different glucose concentrations.[1]
Insulin immunoassays are poorly standardised between manufacturers, differing in cross-reactivity with proinsulin and its split products. Values from different laboratories are not interchangeable, and derived indices inherit the discrepancy.[1]
References
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