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:
“The blood congealing
black
between the pleased fingers.”
—Denise Levertov (b. 1923)
“There’s no true drop of blood in him to be truly touched with love; if he be sad, he wants money.”
—William Shakespeare (1564–1616)
“Behold that great Plotinus swim
Buffeted by such seas;
Bland Rhadamanthus beckons him,
But the Golden Race looks dim,
Salt blood blocks his eyes.”
—William Butler Yeats (1865–1939)