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By Mayo Clinic staffNo diagnostic test confirms progeria. Doctors typically make a diagnosis based on signs and symptoms, such as failure to grow and hair loss, that typically aren't fully evident until your child is nearly 2. However, with the discovery of the genetic mutation that causes progeria, it's possible to use genetic testing for LMNA mutations at the first suspicion of progeria. The sooner you know your child has progeria, the sooner your doctor can recommend treatments that may help ease the signs and symptoms of the disorder.
A blood test may reveal that your child has a low level of high-density lipoprotein (HDL) cholesterol, the so-called good cholesterol that helps keep arteries open. This laboratory finding isn't diagnostic by itself, but may lend support to a diagnosis of progeria.
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