Normal labs, except >500 protein urine?

[Pmama3]

Has anyone ever had normal lab values but over 500 protein in their urine? And Bilirubin was only slightly elevated. Normal creatinine levels no diabetes or high blood pressure, have had severe weight loss appetite loss and night sweats which is what I went in for (thought thyroid but was not!) Was referred to nephrologist, not sure what to expect.
Thanks!