Diabetes patients need to measure their blood sugar level (glucose level) on a regular basis and inject insulin based on the measured blood sugar level to maintain a normal blood sugar level. To maintain this normal blood sugar level, diabetes patients need to measure the blood sugar level on a regular basis. Therefore, patients puncture the skin of their fingers and so forth by using a puncturing apparatus, sample a small amount of blood exuding from the skin and make this sampled blood contact a blood analysis device to take the blood into the blood analysis device. When blood is taken into the blood analysis device, its components such as blood sugar levels are analyzed by a analysis section of the blood test apparatus.
Conventionally, the test strip disclosed in Patent Document 1, for example, has been known as a blood analysis device used to analyze the sampled blood. This test strip has an elongated plate shape, and its base end is connected to a blood component measuring apparatus to take in blood from an opening of a spot application section formed on a leading end surface. In addition, the test strip has a capillary reaction chamber (capillary) that is formed inside and connects to the opening at the leading end, and has a ventilation hole in communication with the capillary reaction chamber provided in a concave part formed on a side end surface so as not to block the flow of blood introduced in this capillary reaction chamber. By this configuration, blood spotted at the spot application section is taken inside from the opening and reaches the capillary reaction chamber, and then, the reaction in the capillary reaction chamber is detected in the blood component measuring apparatus through electrodes to analyze the blood.    Patent Document 1: Japanese Patent No. 3342477