Random drug testing in schools may sound like a good way to keep kids off drugs, but there is little evidence it works, the American Academy of Pediatrics says. In a new report, the nation's leading ...

Glucose testing is a random blood test to check glucose (sugar) levels. It’s usually done by pricking the finger to draw a small drop of blood. This blood is then wiped onto a test strip that will ...

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Learn how representative samples and random samples differ and why combining them minimizes sampling bias for accurate data.