Particulates | Allergens | Other Biologicals

It is often helpful to know what dust inside your home, office, or vehicle contain your allergy triggers. Allergen dust testing should be done after your allergy medical team recommends it. We can provide specialty testing, if requested. Example: if you are allergic to horse dander, we can ask your lab to test specifically for horse dander.


This includes Cat, Dog, Dust Mites (Group 1 and 2), Mouse, and Rat.

We can add cockroach (Group 1 and 2) also.


MARIA is a different way for the environmental laboratory to analyse the dust samples collected. You will receive results for Cat. Dpg. Dust Mites (Group 1 and 2), Mouse, and Rat.

This includes Cat, Dog, Dust Mites (Group 1 and 2) Mouse, and Rat.

We can add cockroach (Group 1 and 2) also.


ERMI dust testing will tell your Allergist MD or other health professional the long term mold spore levels that are present in your household dust. There are two primary sources of these mold spores: outside and mold reservoirs inside your home. ERMI can’t tell the difference. Mold air sampling is recommended to find mold reservoirs inside your home.

The benefits for you of this testing should be discussed with your health professional.

We don’t advise you on what type of dust testing is best for you as we are not trained in human health – we’re “Building Doctors” only.

Other Biological Particles

We offer this air sampling that will show the levels of pollen, fiberglass, starch fibers, and epithelial (skin) cells in your breathing zone and/or outside air.

All of these particles can be removed from your breathable home air by using a high quality HEPA only air purifier.

Fiberglass is considered a non-repairable particle. Simply put, this means you can breathe it in but it’s too small to breathe out. Asbestos is also a non-repirable particle, because the small hooks in the asbestos fibers hook into lung tissue.  There are ongoing health studies on fiberglass particles. A PEL (Permissible Exposure Level) for fiberglass for workers in a factories that generated fiberglass particle. This is measured, usually, over an 8 hour shift period. The EPA is considering new, more restrictive PEL and home safety levels. We are conservative on this and advise not to use fiberglass heating filters or install plastic pink insulation unless it is has a plastic, or other impenetrable, barrier to prevent fiberglass in your breathing zone.

See also Construction Dust – How Does It Affect Me?