Home user tests are product

Product (business)

In general, the product is defined as a "thing produced by labor or effort" or the "result of an act or a process", and stems from the verb produce, from the Latin prōdūce ' lead or bring forth'. Since 1575, the word "product" has referred to anything produced...

 marketing

Marketing

Marketing is the process used to determine what products or services may be of interest to customers, and the strategy to use in sales, communications and business development. It generates the strategy that underlies sales techniques, business communication, and business developments...

 tests

Marketing research

Marketing research is "the function that links the consumer, customer, and public to the marketer through information — information used to identify and define marketing opportunities and problems; generate, refine, and evaluate marketing actions; monitor marketing performance; and improve...

 performed in the consumer's home, contrary to central location test

Central location test

Central location tests are a type of qualitative research technique. They are product marketing tests performed in controlled environments, contrary to home-user tests, which take place where the products would actually be used....

s.
Home test are done in consumers’ homes when products are consumed over a length of time or when an authentic consumption environment is required (for example, where people may modify the product by cooking methods, adding other ingredients or using the product in a personalised manner).
Typically, cleaning products, household goods, small electrodomestics, petfood and products, beauty and cosmetic products may all be tested in the home over a longer or shorter period of time.
Data is collected and processed in the lab.