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ID:110 Insulin
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DescriptionInsulin assays are provided for the diagnosis of hypoglycaemia and will only be measured in states of hypoglycaemia. A fluoride oxalate sample for glucose must be sent at the same time. Serum samples are recommended for insulin measurement as this allows any follow-up tests (e.g. IGF-2, sulphonylureas) to be performed on the same sample. Lithium heparin is acceptable.
IndicationDifferential diagnosis of hypoglycaemia.
Additional Info
Concurrent TestsGlucose, C-peptide
Dietary Requirementsna
InterpretationA raised insulin and C-peptide with a blood glucose < 2.2 mmol/L is indicative of insulinoma (sulphonylurea abuse should be excluded).

DepartmentBiochemistry
SampleBlood
TubeSerum Gel
Tube Picture
Collection ConditionsThe sample should arrive in the laboratory for separation and freezing within 30 min of collection. The laboratory should be notified that the sample is being sent.
Min. Vol0.2 mL
Freq.Referred to external laboratory

Ref. Range (Male)
Ref. Range (Female)
Ref. Range (Paed)
Ref. Range Notes
Unitspmol/L
IP Acute TATRefer to Website
IP Routine TATAt least 1 week
GP Acute TAT- Contact Laboratory
GP Routine TAT- Contact Laboratory
Turnround CommentDr G Wark:gwen.wark@nhs.net

Originally edited by : JHB. Review due on 22/11/2018 12:52:12. Published By SB on 22/11/2017 12:52:12.