A system for taking blood samples from a patient, including a peristaltic pump having a rotor with a moving surface and a fixed surface for lodging therebetween a flexible tube and a head member for attachment of a sample holder tube support member, and a blood sampling device including a needle holder having a tubular portion for supporting a hypodermic needle having a connection base, the needle holder including a conduit with an inlet and an outlet, where the inlet has the tubular portion, the sample holder tube support member, and the flexible tube having a first end in fluid communication with the needle holder and a second end in fluid communication with the support member.
