Glossary Term
Percentile
Any of the 99 numbered points that divide an ordered set of scores into 100 parts each of which contains one-hundredth of the total.
Loading
Loading
Search products, companies, tests, and guides — go from query to quote request in one place.
Glossary Term
Any of the 99 numbered points that divide an ordered set of scores into 100 parts each of which contains one-hundredth of the total.
Glossary Term
Quantity of dimension one used to express on a scale from 0 to 14 the amount-of-substance concentration of hydrogen ion of dilute aqueous solution, calculated as the logarithm of the reciprocal of hydrogen-ion concentration in gram atoms per liter.
Glossary Term
The assemblage of traits or outward appearance of an individual. It is the product of interactions between genes and between genes and the environment.
Glossary Term
A score reported on a logarithmic scale representing the probability that a nucleotide base was incorrectly called by the base caller.
Glossary Term
A distribution function used to describe the occurrence of rare events or to describe the sampling distribution of isolated counts in a continuum of time or space. This special probability distribution can apply to the number of discrete independent random events occurring in a given interval when knowing their average rate of occurrence over a very long interval.
Glossary Term
A control sample that is known to produce a positive result if the test is working as expected.
Glossary Term
The enzymatic processing of a polypeptide chain after translation from messenger RNA and after peptide bond formation has occurred. Examples include glycosylation, acylation, limited proteolysis, phosphorylation, isoprenylation.
Glossary Term
A quantitative representation of the degree of accuracy necessary for or associated with a particular action.
Glossary Term
An expression of the likelihood that a given test result correlates with the presence or absence of disease.
Glossary Term
Chemicals that are added to drug products to prolong shelf life and maintain sterility. Protection of formulations, especially aqueous solutions, against microbial growth requires use of either antibacterial or antifungal preservatives. Generally, such agents are active against either bacteria or fungi but a few are active against both. The antimicrobials include but not limited to chlorobutanol, benzyl alcohol, sodium benzoate, sorbic acid, and phenol. The antioxidizing agents include butylated hydroxytoluene, hydroxyanisole, propyl gallate, and sulfites. The necessary addition of preservatives for both safety and economy sometimes has been associated with significant adverse effects in certain patient populations.
Glossary Term
The ratio (for a given time period) of the number of occurrences of a disease or event to the number of units at risk in the population.
Glossary Term
General term for a piece of DNA or RNA corresponding to a gene or sequence of interest, that has been labelled either radioactively or with some other detectable molecule, such as biotin, digoxygenin or fluorescein. As stretches of DNA or RNA with complementary sequences will hybridize, a probe will label viral plaques, bacterial colonies or bands on a gel that contain the gene of interest.