Expert answer:
A negative test means that the test result is negative, so we "believe" that the person does not have that disease in question, but this is not necessarily real.
Are there 2 types of syphilis? And when we do an examination and give negative results it means that we have nothing?
A negative test means that the test result is negative, so we "believe" that the person does not have that disease in question, but this is not necessarily real.