Epidermal growth factor is a membrane bound hormone that regulates magnesium excretion in the distal convoluted tubule. A mutation might cause autosomal recessive renal hypomagnesemia 4.
| Clinic | Method | Carrier testing |
| Turnaround | 5 days | |
| Specimen type | genomic DNA |
| Clinic | Method | Massive parallel sequencing |
| Turnaround | 25 days | |
| Specimen type | genomic DNA |
| Clinic | Method | Genomic sequencing of the entire coding region |
| Turnaround | 25 days | |
| Specimen type | genomic DNA |