I am fed up with nurses can't get blood out of me my vains are so deep I can't believe it I have tryd the trik of drinking loads of water before going and putting a heat pack on my arms, as well doing arm exercises and still no luck. The only way the nurse had blood from me was by putting the needle in my vain that is higher in the arm and pulling it out but that vain has gone now and they need to make more blood test on me. Thank you kirsty