A simple skin biopsy test is able to detect an abnormal form of alpha-synuclein with high accuracy in individuals with neurodegenerative disorders such as Parkinson's disease (PD).

Researchers are hopeful that the test — which identified phosphorylated alpha-synuclein (P-SYN) with 95.5% accuracy in the blinded, multicenter trial — will accelerate not just early identification of synucleinopathies but also drug development. Skin Test Accurately Detects Neurodegenerative Disorders (medscape.com)