False negatives on tests for Chlamydia

Russell Farris tryggvi at email.msn.com
Thu Jan 28 01:40:13 EST 1999

lamb wrote in message <36AF8480.A22850EA at cable.A2000.nl>...
>What kind of test was done? Serological? PCR ?
>After treatment the micro-organism usually cannot be detected anymore, but
>antibodies can.

There were multiple serology tests and an ELISA. According to my doctor, the
ELISA test was "bungled" and the serology tests were negative. I take
aspirin daily and a lot of vitamins and minerals to try to deal with the
Chlamydia pneumoniae symptoms: COPD, asthma, various heart ailments,

>Russell Farris wrote:
>>         I was recently tested for Chlamydia pneumoniae and was very
>> surprised when the results came back negative. I found an article by a
>> veterinarian that said that many antibiotics would interfere with ELISA,
>> serology, and other tests for Chlamydia psittaca. I found similar
>> dealing with Lyme disease and Helicobacter pylori. None of these articles
>> listed any citations. I had just completed a course of doxycycline when
>> tests were initiated.
>>         Would aspirin or vitamins affect the results of these diagnostic
>> tests?
>>         I would very much appreciate pointers to information on factors
>> can cause false negative results from these tests. I can't get my HMO to
>> give me azithromycin until I get positive test results, even though my GP
>> and the infectious diseases guy both think I have Cp. Thanks,
>> Russ Farris

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