The invention generally relates to a method for determining carrier or disease status with respect to a particular disease or condition. In certain embodiments, methods of the invention involve obtaining a sample including nucleic acid from a subject. The nucleic acid includes a genomic locus that is diagnostic for an autosomal recessive disease. The nucleic acid is captured and isolated from the sample and further sequenced. The method further includes analyzing sequence reads to determine a copy number of the captured nucleic acid and further determine a disease status based upon the copy number.