Feasibility and Safety of Multicenter Tissue and Biofluid Sampling for α-Synuclein in Parkinson's Disease: The Systemic Synuclein Sampling Study (S4).

J Parkinsons Dis · 2018 · PMC6226302 · PMID 30248065

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did not reach statistical significanceno p-value reported

Collection of all specimens occurred in 83% of the cohort as a whole; this was higher in the HC group as compared to the PD group though the difference between the groups did not reach statistical significance.

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may be significantno p-value reported

In addition, CSF samples with hemoglobin level of > 200 ng/mL were also considered as a metric of feasibility, as this degree of hemoglobin contamination of CSF may be significant enough to affect measurements of CSF total α -synuclein [ 10 ].

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.