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The VDRL test detects the presence of syphilis. The test is indicated for individuals with symptoms or risk of exposure to syphilis or other STDs. Syphilis is a mandatory reporting disease. The VDRL test detects a constituent associated with the presence of the bacteria that causes syphilis (Treponema pallidum). In an undiagnosed individual, a positive VDRL test must be confirmed at the Laboratoire de santé publique du Québec (LSPQ) by a technique that detects the bacterium itself. Syphilis can be detected approximately ten days after infection. The window (period during which detection is possible) ends twelve weeks after exposure.

A negative VDRL test result indicates the absence of syphilis or the presence of syphilis in a dormant stage. If suspected, the test should be repeated three months after the presumed contact. A positive VDRL test confirmed by the LSPQ indicates the presence of syphilis, which will need to be staged based on the clinical presentation (primary or secondary infectious, latent, etc.). If a positive VDRL test is not confirmed by the LSPQ, there is no infection unless it is in the incubation period. A new test is indicated two to four weeks after the first.

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Breast cancer

Breast cancer: This is a malignant tumour made up of many cancerous cells. It should be noted that breast cancer is not the most common cause of breast pain, as patients of this disease are often asymptomatic.