|Clinical Use:||Differential diagnosis of spontaneous hypoglycaemia|
|Background:||The measurement of both insulin and C-peptide is advisable in these investigations since in some cases of insulinoma, insulin levels may be low or marginally inappropriate whereas C-peptide is almost always raised.
Further tests, such as those for ketones, proinsulin, sulphonylureas, growth hormone and the insulin-like growth factors may also be required to complete the diagnostic process
|Reference Ranges:||Adult (Fasting): 0.11 – 0.61 nmol/LAn interpretation of the result(s) will be provided where sufficient information accompanies the request.|
|Patient Preparation:||Hypoglycaemia, spontaneous or whilst fasting, must first be established, by regular monitoring of blood glucose levels.Blood collected in a plain vacutainer or syringe, when the blood glucose concentration (confirmed by laboratory analysis) is less than 2.2 mmol/L (or less than 2.5 mmol/L in patients over 60 years), should be used for the tests.|
|Specimen Requirements:||A Serum sample is required for this assay|
|Turnaround Time:||1 week|
|Referred Test:||Referred test|