Although not always required, genetic testing can confirm the diagnosis but not exclude it. Classically PTPN11 mutations can be seen in approximately half of the patients.
Noonan syndrome other diagnostic studies
Fanconi syndrome differential diagnosis
Noonan syndrome causes
Wolff-Parkinson-White syndrome other diagnostic studies
Bartter syndrome other diagnostic studies
Friedreich's ataxia other diagnostic studies
Noonan syndrome laboratory findings
Noonan syndrome differential diagnosis