Of course, each situation will be unique, here is some general information on how one person can test positive for chlamydia and/or gonorrhea, while their partner tests negative.
Chlamydia and gonorrhea can be passed by oral, vaginal/internal genital or anal/rectal sex.
If someone tested positive for chlamydia and/or gonorrhea, and their sexual partner tested negative, there are a few possibilities that could make this happen. Some of these include:
- As most people do not have symptoms, it is possible the person (who tested positive) could have had chlamydia/gonorrhea from a previous relationship, and has not passed it to their partner yet. It is never 100% that you will pass an STI when you have sex.
- It is possible that the person who tested negative for chlamydia/gonorrhea actually has it, but did not give a good specimen to be tested. For example, when providing a urine specimen for testing, it is recommended that the person not urinate 1-2 hour before the test. If the person did urinate during that time, then the test may not be accurate.
- It is possible the person did test positive for chlamydia/gonorrhea, but if they are worried about getting in trouble, they could say they tested negative.
- With the chlamydia/gonorrhea test, there is also the small chance of the person having a false positive test result. For example, the chlamydia test is positive but you actually do not have chlamydia.
- It is also possible the person (who tested negative) had chlamydia/gonorrhea in the past, but was treated with antibiotics for an unrelated medical condition that also happened to get rid of the chlamydia/gonorrhea at the same time.
Fortunately, chlamydia and gonorrhea are curable with proper antibiotics.
When a person tests positive for chlamydia and/or gonorrhea, it is recommended that all sexual partners be tested and treated regardless of their results.