This could be due to certain foods or drinks, normal secretions such as sperm, pus in urine, bladder infection, cystitis, urinary tract infection, kidney stones
, blood in urine, proteinuria
conditions, acute pyelonephritis, prostatitis or gonorrhea. The urinalysis may indicate presence of infection, proteinuria, blood and abnormal substances. However, since this showed normal results, these causes may be ruled out.