Elevated protein in the urine can result in edema in the arms and legs if the level is high enough; one such condition is called the nephrotic syndrome. Normally protein in the blood travels through the kidneys, but is not filtered through into the urine like other components of blood. When protein is lost in the urine, the amount of protein in the blood can become low. When this occurs, the ability of the blood vessels to hold onto water is decreased, and the water can seep out into the surrounding skin, causing edema.
Lasix can help remove the excess fluid but may not be addressing the underlying problem. You should have a discussion with your doctors
">primary care doctor or nephrologist
about the significance of the protein in the urine. If there is no explanation for its elevated level and that is the only abnormality in your work-up, then it may be worth having a more thorough work-up. You should also ask your doctors about the use of blood pressure medications called ACE inhibitors or Angiotensin Receptor Blockers which may be able to help reduce the amount of protein in the urine.