 [ Symptoms ] is it possible for chlamydia to go undetected in an std test  about a year ago i was diagnosed with chlamydia but did not get treated i could not afford the medicine i decide to go back to the doctor a different one i just got the call i am negative chlamydia i never told her i tested positive for it but i did tell her that i am sure i am going to test positive for something i also realized that she did not take a urine sample from me only culture sample is it possible chlamydia can go undetected in a culture sample can it clear up on it is own [ Disease ] hi this is a piece of info i found and as you can see the urine test is just an extra test that can be done to determine if a person has chlamydia a physician may perform a culture swab for women the physician may take a sample of discharge from the cervix in some cases a sample may be taken from the anus the sample is then sent to a laboratory where it is studied for the presence of bacteria urine tests may also be performed after a sample of urine is collected it is sent to a laboratory where it is studied for the presence of bacteria do hope this helps you good luck