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Measuring the clottable fraction of liquid PRF. (A,B) The weight of clotted liquid PRF prepared at 2000× g before and after compressing is indicated. (C) The ratio of the pure clotted fibrinogen against total clottable fibrinogen was calculated dry weight/wet weight (D/W). Statistical analysis was based on the Friedman test, and p-values are indicated compared to fraction 4 (N = 6). Significance was set at p < 0.05.
