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:
“Of Eva first, that for hir wikkednesse
Was al mankinde brought to wrecchednesse,
For which that Jesu Crist himself was slain
That boughte us with his herte blood again—
Lo, heer expres of wommen may ye finde
That womman was the los of al mankinde.”
—Geoffrey Chaucer (1340?–1400)
“Oh, God! that bread should be so dear,
And flesh and blood so cheap!”
—Thomas Hood (1799–1845)