Antigen detection is an important approach in this respect, it should be avoided during the investigation of urine specimens with unabsorbed sera obtained from conventionally raised rabbits (Dupont et al., 1987). Sometime, Aspergillus serum specimens for the detection of antibodies against it may be absorbed with Escherichia coli, Staphylococcus saprophyticus, and Klebsiella pneumonia. Therefore, Aspergillus detector sera should be examined before using it in immunoblot tests for detecting the presence of common antibodies organisms causing urinary tract infections antibodies (Kawamura et al., 1999; Yamakami et al., 1998).