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Throat/Anus Chlamydia (PCR)

Chlamydia trachomatis is the most common mandatory reporting STD (STI) in Quebec. It is often asymptomatic and, if left untreated, can lead to complications affecting the genital organs and infertility. The screening technique (PCR or NAAT) detects the bacteria’s DNA or RNA (genetic material) after amplification. Results are generally positive about 2 weeks after infection. Depending on the risk factors, chlamydia testing can be performed on a urine, genital, urethral, throat or anal sample. A warning on the report indicates that the technique used was not approved by Health Canada for throat or anal specimens. However, these tests are done at the Laboratoire de Santé publique du Québec (LSPQ) and are very reliable.

A positive (reactive) result indicates the presence of an active bacterial infection. A negative (non-reactive) result only indicates the probable absence of infection at the time of sample collection. Higher-risk individuals should be regularly retested for infection or reinfection. Some samples produce results that are more difficult to interpret. These results are identified as “ambiguous,” “inhibition,” “uninterpretable” or “indeterminate.” The test must then be repeated on a new sample.

Biron sets itself apart

Molecular detection of chlamydia and gonorrhea*.

  • Results available in 24 hours.
  • Accelerates medical care.
  • Costs reimbursed by most insurers.

*A doctor's prescription is required.


Term of the Week

Hot zone

A hot zone is a section of a facility (sometimes an entire facility or even a city district) where there is a high risk of contamination by patients with an infectious disease. All individuals entering a hot zone must respect appropriate protective measures. By analogy, “cold zone” and “warm zone” are used to refer to areas where there is no infected individual or only individuals suspected of having an infection.