Percutaneous electrical nerve stimulation (PENS) is used to relieve pain and is essentially. the same as transcutaneous electrical nerve stimulation (TENS) except that, unlike TENS, the stimulating electrodes are surgically implanted around, or immediately adjacent to, the. nerve serving the painful area.
This prevents donation. Eating. foods high in iron, such as tuna, lean red meat, eggs, nuts, beans, dark green vegetables, raisins or taking a. multi-vitamin with iron may help bring the iron level to. the acceptable range for plasma donation. down those fluids.
The food that you can eat to build up ur blood are  rasins, grapes and drinking grape juice because all these foods are rich in iron that build up blood. 1.Meat(lamb, beef/calf liver, liver from organically raised cattle, fish) 2.Blackstrap molasses(1 tablespoon in a cup of hot water drank as a tea)