| 1. |
50 ml venous blood sample is drawn under strict aseptic conditions. |
| 2. |
The blood is then injected evenly into 6 ACD Venous Blood Collection Tubes to avoid coagulation. |
| 3. |
The tubes are then centrifuged for 15 minutes at 72xg resulting in the three following layers: the inferior layer composed of red cells, the intermediate layer composed of white cells and the superior layer made up of plasma. |
| 4. |
The (5ml) plasma layer is removed from each tube with a 50cc sterile syringe attached to a 21 gauge steel catheter. |
| 5. |
The plasma is then injected evenly into 4 Plasma Preparation Tubes. |
| 6. |
The tubes are then centrifuged for another 5 minutes at 1000xg in order to obtain a two-part plasma: the upper part consisting of 5.5 ml of poor-platelet plasma (PPP) and the lower part consisting of 1.5 ml of platelet-rich plasma (PRP). |
| 7. |
The PRP is then gently aspirated with a 10ml syringe attached to a 21 gauge steel catheter and placed evenly in two sterile freezing vial tubes. |
| 8. |
The PRP is then prepared for activation by transferring calcium activator (0.5ml) solution with a transfer pipette to each vial. This inhibits the blood-thinning effect of ACD anticoagulant in the venous blood collection tubes. |
| 9. |
After activation, PRP turns into a gel-like solution within 25 minutes with adhesive properties and ready for use or for freeze storage. |