 [ Symptoms ] veins are not visible for the blood test what to do  my mom is 61 years old and in every few months she have a blood test her veins are not much visible so the doctors have to pierce at many places can anybody suggest what exercise she can do so the veins becomes more or easily be visible or is there any food which she can take before blood test i do not want her to suffer the pain of piercing at different places any help will be appreciated thanks [ Disease ] i also had problems to see my veins they turned me on my stomach and did the doppler tests and found this is the only way to see the deep veins which carry 80 of the blood back up and found i have a hereditary absence of large deep veins my deep veins are the same size as the peripheral veins causing swelling and painful red spots that now limit my standing or sitting drastically wearing compression stockings are the only relief they can prescribe she may have this abnormally strange vein size as well i am looking for answers myself good luck