blood test noun 2verb 1forms 6 noun2 •A laboratory analysis performed on a blood sample that is usually extracted from a vein in the arm using a hypodermic needle, or by fingerprick.HIV-positive persons may test falsely on the standard syphilis blood tests because they may not be able to mount the "normal" immunological response required of such tests. — 1988 •An analysis of blood performed on two subjects to determine whether they are biologically related, such as a paternity test. verb1 •To administer or conduct a blood test (on someone). formsblood tested · blood-tested · blood testing · blood-testing · blood tests · blood-tests
