The drop of the bottle cap on the anus test bottle of health certificate will affect the test results.

No, the anal swab test of health certificate is an auxiliary test method to detect parasites. The bottle cap will be contaminated with a little bacteria when it falls to the ground, but there are more bacteria in the stool, which will not affect the test results. Health certificate refers to the proof of preventive health examination, which proves that the examinee has the health quality to engage in the prescribed business.