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| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
Insulin, Free (Bioactive)
Test Code36700
Preferred Specimen
Red Top
Patient Preparation
Overnight fasting is required
Minimum Volume
0.3 mL
Other Acceptable Specimens
Lavender Top
Transport Temperature
Refrigerated (cold packs)
Specimen Stability
Room temperature: 12 hours
Refrigerated: 7 days
Frozen: 28 days
Refrigerated: 7 days
Frozen: 28 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Hemolysis • Received room temperature
Methodology
Immunoassay (IA)
Setup Schedule
Set up: Sun, Tues, Thurs; Report available: 3-6 days
Reference Range
| Insulin, Free | 1.5-14.9 uIU/mL |
Insulin analogues may demonstrate non-linear cross-reactivity in this assay. Interpret results accordingly.
Clinical Significance
The free insulin measurement is helpful in interpreting blood sugar concentration and its relationship to insulin injections in insulin-treated patients with insulin antibodies.
