The short answer
Most indoor asthma and allergy symptoms trace to a small set of allergens — dust mite (Der p 1, Der f 1), cat (Fel d 1), dog (Can f 1), cockroach (Bla g 1/2), mouse (Mus m 1) and mold. Laboratory analysis of settled-dust samples quantifies which reservoirs in your home are actually driving symptoms.
Dust mite
Der p 1 / Der f 1
Cat
Fel d 1
Cockroach
Bla g 1 / 2
Mouse
Mus m 1
Why dust sampling, not air sampling
Most indoor allergens are large particles. They settle quickly out of the air and accumulate in reservoirs — bedding, upholstery, carpet, area rugs. Air sampling almost always under-reports them.
Settled-dust collection with a calibrated vacuum cassette, followed by ELISA analysis at an accredited lab, is the standard for residential allergen quantification.
The major allergens
Dust mite (Der p 1, Der f 1): the most common indoor trigger. Loves humidity above 50% and temperature above 70°F — i.e. every Florida bedroom.
Cat (Fel d 1): persists for months after a cat is removed, sticks to clothing, and is the only allergen that routinely turns up in homes where no animal has ever lived.
Dog (Can f 1): less sticky than cat, more variable by breed.
Cockroach (Bla g 1, Bla g 2): concentrated in kitchens; a major asthma trigger in urban housing.
Mouse (Mus m 1): concentrated in pantries, garages and unfinished basements.
Mold: usually a humidity/condensation problem, not a hygiene problem.
What reductions actually do
Encasements on mattress and pillows, weekly hot-water washing of bedding, and HEPA vacuuming twice weekly are the highest-yield interventions for dust mite.
For cat and dog, HEPA filtration in the bedroom + a closed bedroom door is more effective than whole-house filtration.
Roach and mouse reductions are essentially pest control + cleanup. Allergen levels drop weeks after the colony is removed.
How fast results show up
Properly executed reduction plans show measurable symptom improvement within 4–8 weeks. If 12 weeks in there is no improvement, the allergen the occupant is reacting to is probably not the one being addressed — re-sample, re-target.
FAQs
Frequently asked
- Do I have to remove my pet?
- Often no. Targeted bedroom HEPA filtration, encasements, and a strict closed-door policy reduce exposure by 70–90% for many cat-allergic households. We outline both paths and let you choose.
- Will an air purifier alone solve this?
- Not for dust mite, roach or rodent — those live in reservoirs, not the air. Filtration helps with cat, dog, and particulate but is the wrong tool for the others.
- Is mold testing part of an allergen workup?
- When mold is suspected as a contributor, yes. We coordinate the allergen testing with mold sampling so the lab report covers everything in one engagement.
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