For purposes of this subchapter, the following words, terms and phrases shall have the meanings ascribed to them in this section, except where the context clearly indicates a different meaning:
“Human immunodeficiency virus test” means a test or tests of an individual for presence of human immunodeficiency virus, or for antibodies or antigens that result from human immunodeficiency virus infection, or for any other substance specifically indicating human immunodeficiency virus infection, and includes preliminary screening tests.