Click on a circle in the chart to view Sham immigration records. You can find out when most of the Sham families immigrated to the United States. You can focus your search to immigration records dating from that era. Immigration records can tell you an ancestor's name, ship name, port of departure, port of arrival and destination.
Probably, however...: As my colleague dr. Pappas mentions, marijuana is almost always tested in urine rather than blood, so someone would almost certainly pass a blood test but is more likely to face a urine test.
How long does weed stay in your system (blood)? In the blood weed can be present for up to 2-3 days after use, however in cases of heavy and frequent use it can be detected after up to 2-3 weeks.ow long does weed stay in your system (blood)? In the blood weed can be present for up to 2-3 days after use, however in cases of heavy and frequent use it can be detected after up to 2-3 weeks.