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Positive Urine Test, Have Questions
Hello Dr. I have recently tested positive for Chlamydia via a urine test. I have never had unprotected vaginal intercourse but have had several unprotected oral encounters with high risk women, most recently just over a month ago. My concern is I've read numerous posts on this forum stating you cannot contract Chlamydia via oral sex and I'm questioning the integrity of my test results but do not know what the interpretation is. I'm not certain which test was used, but on the laboratory print out, it says 'LPS Antigen.' The specificity range is 100% and the sensitivity is 100%. Am I to assume that this test definitively indicates I have Chlamydia or should it be conceivably considered a false positive? But what are the chances of a false positive with such high specificity and sensitivity ranges? By the way, I am not showing any symptoms.
Thanks.
Thanks.
MEDICAL PROFESSIONAL
LPS or lipopolysaccaride is a part of the cell walls of most bacteria. As a result it is a common contaminant in thins like urine specimens. Chlamydial LPS is not sufficiently different from other kinds of LPS to allow tests like you had to reliably differentiate LPS of one bacteria from another. EWH
This is very reassuring and I'm moving on. I did have one final question for general purpose however. What makes a LPS test unreliable or at least prone to false positives? I tried due diligence researching this question before asking, but could not come up with much data. Thank you once again.
MEDICAL PROFESSIONAL
It helps a little. LPS tests for chlamydia are often falsely positive. furthermore, when urine testing for chlamydia is performed, it is recommended that specimens be taken at least at least an hour after the person has last urinated and that the specimen be taken at the beginning of urination, not at mid stream. Given all that you have told me about this, there is a substantial likelihood that your test was falsely positive and that you do not have chlamydial infection. EWH
Fortunately, I ensure to wear a condom 100% of the time during sexual intercourse and often 'spot check' to ensure it hasn't broke so I'm fairly confident I haven't been exposed to anything that way.
I have found out it was a LPS test but that was the extent of the information I received back. All of my unprotected oral exposures were encountered in Dubai but I live in Kabul, Afghanistan where I was seen and tested. The laboratory is a European type facility but with a majority of Afghan workers. When I provided the sample, it was mid morning and I had already urinated frequently throughout the morning. I was also told to provide my sample midstream if that helps any. The primary reason I went to be seen was for itching in the groin area. The Dr. said I had a fungal infection which is when I told him I was concerned it was something else originally. That's when he said he'd throw in an HIV and Chlamydia test for safe measure. Hope this helps paint a better of my situation. Thanks again.
I have found out it was a LPS test but that was the extent of the information I received back. All of my unprotected oral exposures were encountered in Dubai but I live in Kabul, Afghanistan where I was seen and tested. The laboratory is a European type facility but with a majority of Afghan workers. When I provided the sample, it was mid morning and I had already urinated frequently throughout the morning. I was also told to provide my sample midstream if that helps any. The primary reason I went to be seen was for itching in the groin area. The Dr. said I had a fungal infection which is when I told him I was concerned it was something else originally. That's when he said he'd throw in an HIV and Chlamydia test for safe measure. Hope this helps paint a better of my situation. Thanks again.
MEDICAL PROFESSIONAL
Welcome to our Forum. It will be hard for me to answer your question directly without knowing the name of the test that you had. I have several comments which may be helpful to you however.
1. Chlamydia is an STD. You do not get chlamydia without sexual exposure.
2. It is my impression from reading your question that you have had condom protected intercourse. Condoms work, as long as they have been used properly. Some people put on condoms after starting sex but before ejaculation- condoms do not work when used this way. To work properly condoms must be put on before the start of sexual intercourse, must be used throughout sexual intercourse, and must not break.
3. Oral sex will not give a person a chlamydial infection that can be detected with a urine test.
finally, if, as you indicate the test for chlamydia you had was an LPS test, there is a high risk and, in your case, a substantial possibility that the test result is falsely positive.
Please let me know where you are and the name of the test you were tested with and I will see if that helps me to provide you with additional infomration
I hope these comments are helpful to you. EWH
1. Chlamydia is an STD. You do not get chlamydia without sexual exposure.
2. It is my impression from reading your question that you have had condom protected intercourse. Condoms work, as long as they have been used properly. Some people put on condoms after starting sex but before ejaculation- condoms do not work when used this way. To work properly condoms must be put on before the start of sexual intercourse, must be used throughout sexual intercourse, and must not break.
3. Oral sex will not give a person a chlamydial infection that can be detected with a urine test.
finally, if, as you indicate the test for chlamydia you had was an LPS test, there is a high risk and, in your case, a substantial possibility that the test result is falsely positive.
Please let me know where you are and the name of the test you were tested with and I will see if that helps me to provide you with additional infomration
I hope these comments are helpful to you. EWH
You are reading content posted in the STDs Forum
Herpes spreads by oral, vaginal and anal sex.
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Millions of people are diagnosed with STDs in the U.S. each year.
STDs can't be transmitted by casual contact, like hugging or touching.
Syphilis is an STD that is transmitted by oral, genital and anal sex.
