Simple blood test that looks for elevated levels of prostate specific antigen psa in men fast and reliable results in just 10 minutes the kit includes160 a test cassette desiccant and dropper in a foil pouch buffer solution lancet and instruction leaflet why is this test important psa is a substance made by the prostate gland which naturally leaks into the bloodstream a raised psa level can be due to conditions such as enlargement of the prostate g