Cytogenetic Testing: Fluorescent In Situ Hybridization (FISH) Testing
Also known as: FISH testing, congenital blood test, cytogenetic testing.
What is cytogenetic testing: fluorescent in situ hybridization testing?
The FISH (fluorescent in situ hybridization) test is a blood test that “maps” the genetic material (passed from parent to child during maternal fertilization) in a child’s cells looking particularly for gene abnormalities which can give rise to developmental delays, autism, mental retardation and other rare genetic disorders that sometimes occur at birth.
What happens during the procedure?
A small amount of blood is drawn in the usual way from a child’s vein and sent to a Genetics laboratory for testing.
Is any special preparation needed?
No special preparation is needed for this test.
What are the risk factors?
There are slight risks of infection, bleeding, bruising, swelling or damage to nearby structures when the blood is drawn.
Reviewed by: Jack Wolfsdorf, MD, FAAP
This page was last updated on: 11/9/2018 9:51:16 AM
From the Newsdesk
Nicklaus Children's Hospital will be one of a handful in the country to offer a fast turn-around on genome sequencing that can be a key to saving infants with rare and hard-to-diagnose genetic disorders. As seen on The Miami Herald.
August 15, 2017 was the day my son Lucas was admitted to Nicklaus Children’s Hospital for purposes of treating uncontrollable seizures. After being admitted at a previous children’s hospital on three consecutive occasions and many EEGs later, we were referred to Nicklaus Children’s by a neurologist.