Methods and devices for collecting separate components of whole blood

A device for collecting platelet rich plasma (PRP) from a sample in a vial of centrifugally fractionated whole blood having an upper layer comprising platelet poor plasma (PPP) and a PRP layer which is positioned beneath the upper layer and which contains the PRP, the device comprising:

• an extractor movable through the vial in an adjustable first range of motion, the first range of motion having an end point associated with a position of the PRP;
• an adjustment between the extractor and the vial to adjust the end point of the range of motion to correspond to the position of the PRP;
• a first extraction flow path through the extractor associated with the first range of motion, the extractor being adapted to flow the PPP through the first extraction flow path as the extractor moves through the first range of motion;
• and
• a second extraction flow path associated with the first range of motion end point, the second extraction flow path leading to a PRP collection receptacle.