They will now be called for 'B' sample tests and then the necessary procedure will be followed.
Beckman said Boston Chicken -- which operates restaurants called Boston Market -- voluntarily performs four random sample tests for the bacteria.
However, if a man's PSA looks high, doctors will often recommend removal of a tissue sample for further tests.
But there is no national sample of students who took both tests, so Pearson created its own theoretical sample.
WSJ: New York City Gifted-and-Talented Program's Math Is Questioned
For example, if an employer can demonstrate that a typing test and skills tests using Microsoft Office software products constitute a fair sample of the content of an administrative assistant job, then the tests will probably be considered content valid.
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By law, the U.S. Department of Education gives the math and reading tests to a representative sample of students in every state biennially.
It said the tests were carried out nationally and a sample was not taken from beef within Northamptonshire.
If Landis' backup urine sample is positive - and the backup or B-tests often confirm the original - Landis could be stripped of his title.
Launched in 1997, the tests are taken every three years by a sample of schools in over 70 countries and regional authorities and are used to create a global ranking of school performance.
For molecular diagnostic tests Beckman Coulter has developed a nucleic-acid- sample detection instrument that separates fluorescent-dye-labeled DNA fragments for pattern recognition or further identification.
Part of the problem, she said, was that the slice of New York City students taking the tests doesn't match the demographics of any national sample.
WSJ: New York City Gifted-and-Talented Program's Math Is Questioned
Tests by the state attorney general's office on a sample of Castro's DNA confirmed that he is the father of Berry's 6-year-old daughter, who was rescued from his house, the office said Friday.
Tests are then done to determine the pH and concentration of the sample to ensure the suitability and integrity of the samples for analysis.
The testing regime will be one sample per 50 tonnes of horsemeat, and each country will carry out a minimum of five tests.
Burgers on sale at several supermarkets were taken off the shelves after tests in Ireland found horsemeat accounted for nearly 30% of the meat content in one sample.
"As much as the students in New York City don't look like students in the national sample, there's going to be problems both with the reliability and validity of either of the tests, " she said.
WSJ: New York City Gifted-and-Talented Program's Math Is Questioned
Taking advantage of a Maryland law that allowed DNA tests following felony arrests, police took a cheek swab of King's DNA which matched a sample from the 2003 Salisbury rape.
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