Comprehensive Quality Control of the Regenerative Therapy Using Platelet Concentrates: The Current Situation and Prospects in Japan

Table 3

Influential factors associated with quality of PCs.

Preparation step	Influential factor	Details
Blood collection	Needle	Gauge, length, material, surface modification
	Tubing of butterfly needle	Diameter, length, material
	Syringe/tube	Material, surface modification
	Lag	Distance between blood-collection space and centrifuge
Centrifugation	Tube	Shape, material, surface modification
	Rotator	Swing or angle
	Centrifugal condition	Force, duration
Other handling	Pipetting	Technique, material
	Coagulation	CaCl2, thrombin, glassware