Then blood is drawn from the arm in the same was as with any blood test. Then, using a centrifuge and a special method, platelet rich plasma is isolated the resultant growth factors. The whole process takes about 10 minutes and can be done there in the room with the patient. Then, using a very thin needle, the growth factors are injected the clitoris and into the upper vagina into an area most important for the sexual response, the O-Spot.