- Patients Patients
Reproductive Genetics Testing
Patient Resources
Cost & Billing
- Providers Providers
- Genetic Counseling
- Login Login
- Estimate My Cost
Familial hyperinsulinism (FHI) is an inherited disease characterized by hypoglycemia due to unregulated release of insulin from cells in the pancreas. Symptoms are the result of increased levels of insulin in the blood, which causes decreased blood sugar levels (or hypoglycemia). FHI is also known as congenital hyperinsulinism (CHI). View testing options