METHOD FOR PREVENTING BLOOD DENATURATION AND BLOOD TEST TOOL TO BE USED THEREIN

摘要

A blood test tool with which blood in a dry state can be held without denaturation. In the blood test tool wherein a card made of filter paper is impregnated with the blood and then the blood is held in a dry state, a carboxylic acid such as citric acid is added to the part for holding the blood. Thus, the carboxylic acid exerts an effect of preventing the blood in the dry state from denaturation. It is preferable to add a non-reducing sugar (sucrose, etc.), an anticoagulant (EDTA, etc.) and an antioxidant (glutathione, etc.) together with the carboxylic acid. This blood test tool can be produced by impregnating a filter paper card with a solution containing citric acid, etc. dissolved therein and then air-drying.