In principle it is possible to pump blood with the mp6 micropump. There might be some damaging of blood cells (red blood particles), but only with certain pump settings. The optimal pump settings has to be tested. Our recommendation is to avoid the rectangular signal or high frequencies which both would force rapid and sharp motions of the pump valves, and which could squeeze blood cells to hard.
Hence, trying the sine signal and playing with frequency and amplitude to achieve desired flow rate with as less damage as possible is the best way to achieve successfully work with blood.