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Allergen Testing Services

Category Press Release
Publish Date 11/30/2022
Author Paul Cochrane
Title The Latest Most Rat-Infested Cities List Includes Multiple Municipalities in California
Introduction LA Testing provides laboratory services and test kits to identify environmental allergens caused by rats, mice, cockroaches, pets and other common indoor sources.

Huntington Beach, California, November 30, 2022 

Last month, Orkin released its latest list of the nation’s rattiest cities. Several major population centers in California made the list. The highest ranking Golden State city was Los Angeles (3rd) followed by San Francisco (5th) and San Diego (18th). The list was compiled from new rodent treatments performed by the company from September 1, 2021 through August 31, 2022.

The presence of rodents can lead to both property damage and health concerns for building occupants in infested properties. 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.

“One of the many challenges of living with a rodent infestation is allergies,” said Michael Chapman, Laboratory Manager of LA Testing’s Huntington Beach facility. “Many people are allergic to rat and mice allergens, and for some asthmatics, exposure can even trigger an asthma attack.”

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

An educational video sponsored by LA Testing several years ago about rodent infestations, property damage and indoor environmental quality (IEQ) concerns can still be seen at: 

To learn more about rodent and 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 indoor environmental quality testing of asbestos, mold, 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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