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Allergen Testing Services

Category Press Release
Publish Date 12/4/2023
Author Paul Cochrane
Title Four California Municipalities Make the Annual List of Most Rat-Infested Cities
Introduction LA Testing provides laboratory services and easy-to-use test kits to identify environmental allergens associated with rats, mice, cockroaches, pets and other indoor sources.

Huntington Beach, CA, December 4, 2023

Last month, Orkin released its annual list of the nation’s rattiest cities. Four major cities from California made the list. The highest ranking Golden State city was Los Angeles (2nd) followed by San Francisco (5th), San Diego (28th) and Sacramento (33rd). The list was compiled from new rodent treatments performed by the company from September 1, 2022 through August 31, 2023.

According to the Centers for Disease Control and Prevention (CDC), worldwide, rats and mice spread over 35 diseases. These diseases can be spread to humans directly, through handling of rodents, through contact with rodent feces, urine or saliva, or through rodent bites. Diseases carried by rodents can also be spread to humans indirectly, through ticks, mites or fleas that have fed on an infected rodent.

“Rodents can cause property damage and health concerns for building occupants in infested properties,” said Michael Chapman, Laboratory Manager of LA Testing’s Huntington Beach facility. “Allergies are a significant concern for people who live or spend time in properties infested with rats or mice. For some asthmatics, exposure to rodent allergens could even trigger an asthma attack.”

With multiple testing facilities in California, LA Testing offers laboratory services and easy-to-use test kits to identify rat, mouse, cockroach, dog, cat and other common indoor allergens. Testing a home, school or business can help to identify problems and provide building occupants who suffer from allergies or asthma the information they need to mitigate exposure risks. These same tests can also be used to assess how comprehensively an indoor environment has been remediated following a rodent infestation.

Several years back, LA Testing sponsored an educational video about rodent infestations, property damage and indoor environmental quality (IEQ) concerns that can still be seen at: 

To learn more about rodent or other indoor allergen testing services, please visit, email or call (800) 755-1794. To access allergen and other IEQ test kits, visit


About LA Testing

LA Testing is California’s leading laboratory for environmental and indoor air quality testing of asbestos, mold, bacteria, lead, VOCs, formaldehyde, soot, char, ash and smoke damage, particulates and other chemicals. In addition, LA Testing offers a full range of air sampling and investigative equipment to professionals and the general public. LA Testing maintains an extensive list of accreditations including: AIHA LAP LLC., AIHA ELLAP, AIHA EMLAP and AIHA IHLAP, CDC ELITE, NVLAP, State of California, State of Hawaii Department of Health and other states. LA Testing, along with the EMSL Analytical, Inc. network, has multiple laboratories throughout California including South Pasadena, Huntington Beach, San Leandro and San Diego.

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