| 摘要 |
The disclosure is of a method of maintaining the blood clot-activating properties of a siliceous surface in a blood collecting assembly. The method comprises coating the siliceous surface with a water soluble, inert, film forming barrier material. The advantage of the method of the invention is a retention of speedy clotting time. The disclosure is also of improved blood collecting assemblies wherein the clot-activating components are coated with a film barrier of a water soluble, inert, polymeric material.
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