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Table 1 Comparison of sample volumes and preparation volumes

From: In vitro immunological and biological evaluations of the angiogenic potential of platelet-rich fibrin preparations: a standardized comparison with PRP preparations

  Platelet-poor plasma (PPP) PPP clot Platelet-rich plasma (PRP) PRP clot Platelet-rich fibrin exudate (PRFexu) Platelet-rich fibrin extract (PRFext) Platelet-rich fibrin (PRF) membrane
Starting blood sample volume (mL) 10a 10a 10a 10a 10 10 10
Resulting sample volume (mL) (vs. starting volume) 2.5 (1:4)   1 (1:10)   1 (1:10) 1 (1:10) 1b (1:10)
Relative condensation (fold) 1   2.5   2.5 2.5  
Volume needed to mold a clot (mL) (vs. resulting sample volume)   0.25 (1:10)   0.2 (1:5)    
Number of 5 × 5 × 1-mm membrane   10c   5c    5–7d
Relative condensation (fold)   1   2    1.4–2.0
  1. aThis sample volume does not include the volume of acid citrate dextrose solution (ACD; 1.5 mL)
  2. b(Acquired sample volume) = (blood sample volume) − (RBC fraction) − (serum volume)
  3. cEstimated number of membranes
  4. dAcquired number of membranes