What causes protien in urine when you don't have an infection. my urine ipad been cloudy since my gallbladder was removed and has protein;no infection?

Long list: Conditions that can cause a temporary rise in the levels of protein in urine, but don't necessarily indicate kidney damage, include: Cold exposure, Emotional stress, Fever, Heat exposure and Strenuous exercise. Kidney disease is the number one reason for protein in the urine. The cause of damage is a long list! It includes diabetes, HTN, leukemia, Lupus, Amyloidosis, malaria, heart disease etc.