8 hours
Test Updated:
Immunoreactive Insulin
INS
INSULIN
INSULIN LEVEL
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Test Overview
Immunometric Chemiluminescence
Evaluate for insulin producing neoplasm (islet cell tumor, insulinoma) or pancreatic islet cell hyperplasia to work up hypoglycemia, possibly, to evaluate insulin production in diabetes mellitus.
Fasting level: 1 - 21 mcU/mL in conjunction with a normal serum glucose value. Insulin values obtained during a glucose tolerance test must be interpreted by a physician.
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Specimen Requirements
Collect specimen in a green top tube from a fasting patient. Transport specimen to laboratory, or centrifuge, aliquot plasma into a plastic vial and freeze within 1 hour.
Collect specimen in a green top tube from a fasting patient. Centrifuge, aliquot plasma into a plastic vial and freeze within 1 hour.