Sampling
A total number of 152 poultry meat samples were collected from different open and super markets of greater Bangkok region (Bangkok city and suburb) in sterile polyethene bags and kept in priorly disinfected sampling box. The samples were brought to the laboratory in a sampling box maintaining low temperature (≤ 4oC) using ice pads. The collected samples were processed within six hours of its collection. The samples were collected randomly and each collected sample was marked with identification code with respect to the date and time of collection. Sampling criteria was limited to 300 g of one sample in open market and one packet in supermarket. Samples collection criteria were not limited to any specific part.