"0"^^ . . . . . . "105410046"@en-us . "0"^^ . "PSA blood test"@en-us . "PSA blood test"^^ . "05742703-n"^^ . . . "105742703"^^ . "a blood test that measures levels of a protein called prostate specific antigen that is manufactured exclusively by the prostate gland; men with prostate problems usually have elevated levels of PSA"@en-us . . .