Insulinoma Diagnosis

Tests used for insulinoma diagnosis include:

1. Blood Glucose Test: Measures blood sugar levels before and after fasting or consuming glucose.
2. Insulin Level Test: Measures insulin levels in the blood.
3. C-Peptide Test: Determines the amount of C-peptide, a byproduct of insulin production.
4. Proinsulin Test: Measures proinsulin levels, which may be elevated in insulinoma.
5. Imaging Tests: Such as CT scan, MRI, or endoscopic ultrasound to locate the tumor.
6. Secretagogue Stimulation Test: Evaluates insulin and glucose response to certain drugs.
7. Genetic Testing: Identifies genetic mutations associated with insulinoma in some cases.

The diagnostic process for insulinoma is generally accurate. Blood glucose, insulin, C-peptide, and proinsulin tests provide valuable information. Imaging tests help locate tumors. Secretagogue stimulation test evaluates insulin response. While accuracy varies, overall diagnostic accuracy is high when multiple tests are combined and interpreted by experienced healthcare professionals.

Yes, there are specific symptoms and signs that may indicate insulinoma. These include recurrent episodes of low blood sugar (hypoglycemia), confusion, weakness, dizziness, sweating, palpitations, and hunger. Fasting can trigger these symptoms, and they often improve after eating. It's essential to consult a healthcare professional for proper evaluation and diagnosis.