Ko te whakamātautau Free Prostate-Specific Antigen (f-PSA) he tūāpapa mō ngā tātaritanga mimi hou, he mea nui ki te aromatawai i te mōrearea o te mate pukupuku repeure. Ehara i te mea he taputapu tirotiro takitahi tōna hiranga engari he tāpiri nui ki te whakamātautau PSA katoa (t-PSA), e whakarei ake ana i te tika o te tātaritanga me te ārahi i ngā whakataunga haumanu nui, mā te āwhina ki te karo i ngā tikanga whakaeke kore e hiahiatia.

Ko te wero nui i roto i te tirotiro matepukupuku repeure ko te kore o te motuhaketanga o te t-PSA. Ka taea te hua o te taumata t-PSA teitei (ko te tikanga >4 ng/mL) i te matepukupuku repeure, engari i ngā āhuatanga pai anō hoki pērā i te Benign Prostatic Hyperplasia (BPH) me te prostatitis. Ka hangaia he "rohe hina tātaritanga" nui, inā koa mō ngā uara t-PSA i waenga i te 4 me te 10 ng/mL. Mō ngā tāne i roto i tēnei awhe, ka uaua te whakatau mēnā ka haere tonu ki te koiora repeure—he tikanga whakaeke me ngā mōrearea pea pērā i te toto, te mate, me te mamae. I roto i tēnei horopaki ka kitea te uara nui o te whakamātautau f-PSA.

Ko te hiranga matua o te f-PSA kei roto i tōna kaha ki te whakapai ake i te aromatawai mōrearea mā te ōwehenga f-PSA ki te t-PSA (ōrau PSA kore utu). I roto i te koiora, kei roto i te toto te PSA i roto i ngā āhua e rua: te herea ki ngā pūmua me te kore utu. Kua whakaatuhia tonutia e ngā rangahau he iti ake te ōwehenga o te f-PSA i roto i ngā tāne he matepukupuku prostate ki te hunga he BPH. Ko ngā pūtau kino ka whakaputa i te PSA e uru ana ki te toto, ā, ka tere ake te herea, ka iti ake te ōrau o te āhua kore utu. I tetahi atu taha, ko te ōwehenga nui ake o te f-PSA e hono pinepine ana ki te whakanui pai.

Ka whakamahia tēnei rerekētanga matū koiora ki te tātai haumanu hei tatau i te ōrau PSA kore utu. Ko te ōrau PSA kore utu iti (hei tauira, i raro i te 10-15%, me ngā tapahi tika e rerekē ana) e tohu ana i te tūponotanga nui ake o te mate pukupuku repeure, ā, he tino tika te taunakitanga mō te koiora repeure. I tetahi atu taha, ko te ōrau PSA kore utu teitei (hei tauira, i runga ake i te 20-25%) e tohu ana i te tūponotanga iti ake o te mate pukupuku, e kī ana ko te pikinga o te t-PSA he nui ake te tūponotanga nā te BPH. I roto i ēnei take, ka taea e te tākuta te taunaki māia i tētahi rautaki tirotiro kaha - tae atu ki te whakamātautau PSA anō me ngā whakamātautau matihiko rectum i roto i te wā - kaua ki te koiora tonu.

Nō reira, ko te pānga nui rawa atu o te whakamātautau f-PSA ko te whakaiti nui i ngā koiora repeure kāore e hiahiatia. Mā te whakarato i ēnei mōhiohio whakahāwea nui, ka āwhina te whakamātautau ki te ārai i te tini o ngā tāne kei uru ki tētahi tikanga whakaeke kāore e hiahiatia ana e rātou, ā, ka whakaitihia te mate o te tūroro, ka whakaitihia ngā utu hauora, ka whakamama i te manukanuka nui e pā ana ki te koiora me te tatari mō ōna hua.

Haunga te rohe hina matarohia o te 4-10 ng/mL, he mea nui anō hoki te f-PSA i roto i ētahi atu āhuatanga: mō ngā tāne he pikinga tonu o te t-PSA ahakoa he kino te koiora o mua, tae atu ki te hunga he noa te t-PSA engari he rerekē te whakamātautau matihiko rectum. Kei te whakaurua haeretia ki roto i ngā tātaitai mōrearea maha-taurangi mō tētahi aromatawai whānui ake.

Hei whakamutunga, kāore e taea te whakanui rawa i te hiranga o te whakamātautau f-PSA. Ka hurihia te hua mata, kore-motuhake o te t-PSA hei taputapu tātaritanga kaha ake, atamai ake hoki. Mā te whakahohe i te wehewehenga mōrearea i roto i te rohe hina tātaritanga, ka whakamanahia ngā tākuta ki te whakatau i ngā whakatau whai mōhiotanga ake, e ahu mai ana i ngā taunakitanga, ā, i te mutunga ka arotau i te tiaki tūroro mā te whakaiti haumaru i te tātaritanga nui rawa me te maimoatanga nui rawa, me te whakarite kia tautuhia, kia tangohia wawetia hoki ngā tāne e tino mōrearea ana.