X-ray fluorescence (HDXRF) may be helpful in the diagnosis of Friedreich's<unk> . Findings on an HDXRF suggestive of Friedreich's<unk>  include: Clusters of iron-rich hot-spots with similar mass fractions and significant decrease in zinc concentration in the cytoplasm of fibroblasts of patients with friedreich's<unk> .
Friedreich's ataxia other diagnostic studies
Friedreich's ataxia echocardiography or ultrasound
Bartter syndrome other diagnostic studies
Duchenne muscular dystrophy other diagnostic studies
Fragile X syndrome other diagnostic studies
Friedreich's ataxia electrocardiogram
Noonan syndrome other diagnostic studies
Glycogen storage disease type III other diagnostic studies