A woman uses a home pregnancy test kit that tests for hCG hormone in urine. She knows this is a type of antibody assay from the kit brochure. Antibodies reacting with the hormone produce two lines on the test strip. What specific type of antibody assay does this represent?
A) a direct immunofluoresence test B) a complement fixation test C) an immunochromatographic assay D) an ELISA E) a neutralization assay