Microbiological Testing

Warnex's team of specialists performs a variety of microbiology, virology, and serology tests using advanced techniques to provide data for the diagnosis and evaluation of infectious diseases.

Influenza A H1N1 Virus

Influenza A H1N1 virus, a subtype of the influenza A virus also known as human swine flu, was first detected in people in April 2009. It was originally referred to as "swine flu" because laboratory testing showed that many of the genes in this new virus were very similar to the genes of influenza viruses that normally infect pigs in North America. However, further studies have shown that this virus is made up of genetic elements from four different flu viruses: North American swine influenza, North American avian influenza, human influenza, and the swine influenza virus typically found in Asia and Europe. In June 2009, the World Health Organization declared that this new H1N1 strain was the first level 6 pandemic since 1968. Warnex uses real-time polymerase chain reaction (RT-PCR) technology to detect the influenza A virus, including the A H1N1 strain. Results are available in as little as 8 hours.

For more information on our diagnostic service for influenza A H1N1 virus, click here.

H275Y Mutation of the Pandemic Influenza A H1N1 Virus Associated with Tamiflu® Resistance

Tamiflu® and Relenza® are two drugs recommended for the prevention and treatment of influenza A virus infections. Tamiflu is the preferred drug since it is a pill to be taken orally. However, since the beginning of the pandemic, certain people infected with the influenza A H1N1 virus have shown resistance to Tamiflu. Resistance to Tamiflu has been associated with the H275Y mutation of the neuraminidase gene in all of these cases. The neuraminidase gene codes for a protein that is essential to the virus' life cycle. A test that detects the H275Y mutation can assist in providing the best treatment for patients. Warnex uses a sequencing technique of the neuraminidase gene to detect the H275Y mutation associated with Tamiflu resistance. Results are available in 2 working days.


Herpes simplex virus (HSV) is a pathogen that establishes infections in mucosal tissues, especially around the lips and genital mucosa. Two types of viruses (HSV-1 and HSV-2) are known to cause herpes symptoms. Warnex Medical Laboratories offers tests for both the detection of the herpes simplex virus type 1 and 2, using type specific IgG serology.


Medical Laboratories Brochure (PDF: 1.0 Mb)


Dr. Yvan Côté
Vice President & General Manager
Warnex Medical Laboratories
Tel: (450) 663-6724 x 380