Low 24Hr Urine Potassium

24Hr Urin Potassium tested low, and I also have a low blood potassium (flucates btwn 3-3.5; range is 3.5-5.5).  What would cause this to be low in Urine?

[remar]

Low potassium can be caused by several things. Diarrhea, vomiting, a poor diet or kidney problems. What did your Dr say about your results? Have they done kidney tests? Are you having any of the problems I mentioned? You may just need to get more potassium in your body with potassium rich foods like bananas and potatoes. Your Dr may want to put you on a supplement for awhile to get your levels back up. The normal blood levels are between 3.6 and 4.8 so yours are jumping around. Are you having any weakness or muscle cramps? I would ask to have kidney tests done and if those come back alright then adjust your diet and ask you Dr about supplements.   Remar