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  2. Presumptive and confirmatory tests - Wikipedia

    en.wikipedia.org/wiki/Presumptive_and...

    For example, the Kastle–Meyer test will show either that a sample is not blood or that the sample is probably blood, but may be a less common substance. Further chemical tests are needed to prove that the substance is blood. Confirmatory tests are the tests required to confirm the analysis. Confirmatory tests cost more than simpler ...

  3. Blood alcohol content - Wikipedia

    en.wikipedia.org/wiki/Blood_alcohol_content

    Blood alcohol content (BAC), also called blood alcohol concentration or blood alcohol level, is a measurement of alcohol intoxication used for legal or medical purposes. [1] BAC is expressed as mass of alcohol per volume of blood. In US and many international publications, BAC levels are written as a percentage such as 0.08%, i.e. there is 0.8 ...

  4. Biological half-life - Wikipedia

    en.wikipedia.org/wiki/Biological_half-life

    In clinical practice, this means that it takes 4 to 5 times the half-life for a drug's serum concentration to reach steady state after regular dosing is started, stopped, or the dose changed. So, for example, digoxin has a half-life (or t ⁠ 1 / 2 ⁠ ) of 24–36 h; this means that a change in the dose will take the best part of a week to ...

  5. What Do AM and PM Stand For? - AOL

    www.aol.com/am-pm-stand-153002424.html

    The AM/PM system actually does have a specific abbreviation for noon—just the letter “M,” short for “meridiem,” which would come after “12” and only refer to noon. Haven’t heard of it?

  6. Alcohol intoxication - Wikipedia

    en.wikipedia.org/wiki/Alcohol_intoxication

    Some effects of alcohol intoxication, such as euphoria and lowered social inhibition, are central to alcohol's desirability. [21] As drinking increases, people become sleepy or fall into a stupor. At very high blood alcohol concentrations, for example above 0.3%, the respiratory system becomes depressed and the person may stop breathing. [22]

  7. Alzheimer’s blood tests show 'very good accuracy' in early trials

    www.aol.com/lifestyle/alzheimer-blood-tests-show...

    Two blood tests currently in development have shown 'very high accuracy' in detecting tell-tale signs of Alzheimer's disease, according to the developers. Alzheimer’s blood tests show 'very good ...

  8. Drug test - Wikipedia

    en.wikipedia.org/wiki/Drug_test

    Drug-testing a blood sample measures whether or not a drug or a metabolite is in the body at a particular time. These types of tests are considered to be the most accurate way of telling if a person is intoxicated. Blood drug tests are not used very often because they need specialized equipment and medically trained administrators.

  9. Jurors hear about Karen Read's blood alcohol level as murder ...

    www.aol.com/news/jurors-hear-karen-reads-blood...

    He calculated that her blood alcohol content at 9 a.m., the time of the blood test, was between .078% and .083%, right around the legal limit for intoxication in Massachusetts.