Blood test apparatus and method of controlling the same

A blood test apparatus configured for puncturing skin measuring blood, the apparatus comprising:

• a laser puncturing section that emits a laser light to puncture the skin;
• a blood sensor that collects and analyzes the blood flowing out from the punctured skin, the blood sensor being configured for detecting collection of the blood;
• a holder that holds the blood sensor;
• a negative pressure section that creates a first negative pressure in a space near the blood sensor;
• and
• a negative pressure controlling section that controls an operation of the negative pressure section,
• wherein the negative pressure controlling section repeatedly increases the first negative pressure in the space near the blood sensor up to a predetermined maximum negative pressure and reduces the first negative pressure in the space near the blood sensor to a second negative pressure lower than the predetermined maximum negative pressure, in at least a part of a period that extends from when the skin abuts on the holder until when the blood sensor detects the collection of blood.