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Glossary Term
A family of discrete probability density functions, which models systems that meet the following requirements: 1) the number of trials (n) is fixed; 2) there are only two outcomes for each trial, success or failure; 3) the outcome of each trial is independent; and 4) all trials have the same probability (p) of success. Binomial distributions show the likelihood of the number of successful trials versus the total number of trials.
Glossary Term
The genetic material of the nucleus, consisting of deoxyribonucleoprotein, which occurs in two forms during the phase between mitotic divisions: 1) as heterochromatin, seen as condensed, readily stainable clumps; 2) as euchromatin, dispersed lightly staining or nonstaining material. During mitotic division the chromatin condenses into chromosomes.
Glossary Term
Validation evidence that an assay detects the range of variants, genotypes, or serotypes it claims to cover. For evolving targets such as influenza or SARS-CoV-2, inclusivity statements carry a validation date and should be checked against circulating variant lists at procurement time.
Glossary Term
A two-step setup in which RNA is first copied into complementary DNA by a reverse transcriptase and then amplified by PCR. Used for RNA viruses such as influenza, RSV, SARS-CoV-2, and HCV. In procurement documents, confirm whether "RT-PCR" refers to real-time (quantitative) or endpoint (qualitative) reading.
