Allergy & Allergen Tests

Johnson Group – Your Environmental Hygiene Specialist

Johnson Group – Government-Accredited Indoor Air Quality Consultant

Johnson Group’s Allergy & Allergen Testing Service has been recognized by Hong Kong Environmental Protection Department Indoor Air Quality Information Centre and titled in its lists of “Indoor Air Quality Contractors“, “Indoor Air Quality Control Suppliers” and “Indoor Air Quality Consultants” across three categories.

Detection of Microorganisms and Bacteria Level

Identify the breeding sources of bacteria, mould and yeasts. This test can also be used to evaluate and verify the cleanliness of any surfaces.

IAQ and PM2.5 Test

Determines the level of a list of common IAQ parameters in indoors. For example, PM2.5, carbon dioxide (CO2), carbon monoxide (CO), nitrogen dioxide (NO2), formaldehyde (HCHO) and volatile organic compounds (TVOC) etc.

Formaldehyde & VOCs Test

Determines the level of HCHO (formaldehyde) and TVOC (Total Volatile Organic Compound) in indoor air and furnishings

Car (Vehicle) Interior VOC Test

Determine 8 types of VOCs (Volatile Organic Compound) level in vehicle interiors.

House Dust Mite Test

Determines the level of contamination of house dust mites on home textiles (e.g. mattresses, sofas & carpets etc.)

Mould Identification (Surface) Test

Identifies the types of moulds by taming samples of indoor surfaces where mould growth is suspected.

Mould Identification (Air) Test

To find out whether there are airborne moulds spores in the air and identify the mould to genus level by collecting air samples at indoor environment where mould growth is suspected.

Bacteria Identification Test

Identifies the types of bacteria by taming samples on indoor surfaces where the growth of particular microorganism(s) is suspected.

After the test service, you will receive a test report and our recommendations (related services and products) based on the results.

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Our service is ideal for people who suffer from asthma or allergies

There is no better defense against environmental allergens than a tailor-made service plan from Johnson Group. We provide the fastest services to locate allergens like dust mites, moulds, bacteria, fungi, particulate matter, formaldehyde (HCHO) & Volatile Organic Compounds (VOC) etc. which have been medically proven to trigger a whole host of allergic reactions like asthma, bronchitis, eczema, sneeze, itchy skin and other health issues.

Bacteria and moulds

We are exposed to many different types of bacteria in our daily life. Although most of them do not pose health risks, studies have shown that these four common bacteria can easily be found in many of the indoor environments and hard surfaces: Micrococcus, Staphylococcus, Bacillus, and Pseudomonas.

Mould contamination is one of the major factors that deteriorate the indoor air quality. Many buildings have problems like water leakage or poor ventilation, the damp environment in return support the growth of moulds.

When mould spores land on a moist / damp surface, they begin to grow. Moulds can cause different health issues as they produce allergens, irritants, and in some cases, even toxins (mycotoxins). Inhaling or touching moulds or mold spores may cause allergic reactions for children and allergy sufferers.

Environmental Allergy

Allergy is a hypersensitivity disorder of the immune system. Most common environmental allergies are triggered by airborne allergens, such as dust mite, pollen, pet dander, mould spore, particulate matter or formaldehyde (VOC). Some individuals may respond to allergens which activate the production of IgE, leading to type I hypersensitivity. This will result in sniffling, sneezing, coughing, or itching or even an extreme inflammatory response.

Asthma and Allergy

Some main signs of allergy are itchiness, sneezing, inflamed or infected eczema, watering/reddening eyes, runny nose and clogging in the lungs. Allergens are tiny and light perfect for taking wing in the ducts and open air of spaces around your house. Indoor allergens like formaldehyde, dust mite, mould, particles or even volatile chemicals from conventional cleaners can accumulate in your air conditioners, curtains, mattresses, sofas and carpets . Allergens produced by house dust mites are among the most common triggers of asthma. Therefore, deep clean your home regularly is essential.

IgE and Asthma

Immunoglobulin E, or IgE, is a kind of antibody that plays an important role in the development of allergic asthma. Increased levels of IgE may result when you are exposed to allergens, such as dust mite, pollen, pet dander, mould spore, particulate matter or formaldehyde. Your body releases IgE, which then binds with several types of cells like basophils, lymphocytes & mast cells. This can then stimulate your immune system, cause your airways to become narrow and inflamed, and make your asthma symptoms worse.