The basilic vein is the biggest vein in the arm, but it is too deep and in the wrong place to use unless we are willing to make a long incision, free up the vein from its deep location, and move it closer to the skin. The “transposed” (moved) basilic AV fistula sometimes can be used within weeks, as it may not need much “growth” time. It is usually the last fistula option in the arm.