Blood
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.
Depending on how much marijuana was consumed, it can usually be detected in blood tests within six hours of consumption. After six hours has passed, the concentration of marijuana in the blood decreases significantly. It generally disappears completely within 30 days.
Famous quotes containing the word blood:
“No person connected with me by blood or marriage will be appointed to office.”
—Rutherford Birchard Hayes (1822–1893)
“A Spirit free, to choose for my own share,
What sort of Flesh and Blood I pleas’d to wear,
I’d be a Dog, a Monkey or a Bear,
Or any thing, but that vain Animal,
Who is so proud of being rational.”
—John Wilmot, 2d Earl Of Rochester (1647–1680)
“Men hear gladly of the power of blood or race. Every body likes to know that his advantages cannot be attributed to air, soil, sea, or to local wealth, as mines and quarries, nor to laws and traditions, nor to fortune, but to superior brain, as it makes the praise more personal to him.”
—Ralph Waldo Emerson (1803–1882)