In the United States Army Special Forces, the motto is traditionally believed to mean to free from oppression or to liberate the oppressed in English. A correct translation of the phrase de oppresso liber would be from (being) an oppressed man, (to being) a free one. The preposition de here means from in the sense of a change from one status to another, not intending separation from the oppressed, but moving from a source in the oppressed.
Qualitative hCG testing detects the presence of hCG and is routinely used to screen for a pregnancy. This test may be performed by a laboratory, at a doctor's office, or at home using a home pregnancy test kit.
Guide. A chemistry screen is a blood test that measures the levels of several substances in the blood (such as electrolytes). A chemistry screen tells your doctor about your general health, helps look for certain problems, and finds out whether treatment for a specific problem is working.