How is genetic testing done for CAH diagnosis?
Genetic testing for CAH involves taking a small blood or saliva sample that gets sent to a laboratory. The lab specifically looks for changes in the CYP21A2 gene, which provides instructions for making an enzyme called 21-hydroxylase that's essential for producing adrenal Show Full Answer
How is genetic testing done for CAH diagnosis?
Genetic testing for CAH involves taking a small blood or saliva sample that gets sent to a laboratory. The lab specifically looks for changes in the CYP21A2 gene, which provides instructions for making an enzyme called 21-hydroxylase that's essential for producing adrenal hormones.
You might need genetic testing if you:
- Have symptoms of CAH
- Experience fertility issues
- Show high androgen levels
- Have family members with CAH What happens after testing?
The results can help with:
- Confirming a CAH diagnosis
- Family planning decisions
- Informing other family members who may want to get tested
- Connecting with genetic counselors who can provide guidance and resources
For expecting parents with a family history of CAH, prenatal testing options are available through amniocentesis or chorionic villus sampling to check if an unborn baby has the condition.
May 29, 2025