Not all people with a positive test result will manifest the disease during their lifetimes. A test for a completely penetrant single-gene disease. Proficiency testing The use of blind testing to assess whether the laboratory can perform a test correctly. Usually the samples are provided by an organization independent of the laboratories performing the test. Protein String of amino acids linked by peptide bonds.
Some proteins have more than one polypeptide chain.
Each chain is encoded by a different gene. Recombinant DNA techniques The ability to excise exact segments of DNA and insert them into DNA of other organisms, which can then replicate the segment millions of times. The probability that a test will detect an analyte when it is present in a specimen. Clinical The probability that a person with a disease, or who will get a disease, will have a positive test result. The inheritance of these disorders follow the ratios first described by Gregor Mendel.