Hiat-kiû (血球; pe̍h-ōe-im: hoeh-kiû), he̍k-chiá hiat-e̍k sè-pau (血液細胞; Eng-bûn: blood cell) sī chûn-chāi tī hiat-e̍k lāi-bīn ê sè-pau, tāi-iok chiàm 45%. Hiat-kiû ē-ēng tòe hiat-e̍k ê liû-tōng piàn-ki̍p choân-sin. Pí-lūn-kóng, chhī-leng tōng-bu̍t ê hiat-kiû ē-sái hun-chò 3 khoán:

Sú-iōng SEM só͘ khòaⁿ-tio̍h ê chē-chē jîn-lūi hiat-kiû; kî-tiong pau-hâm hông-hiat-kiû, pe̍k-hiat-kiû kap hiat-siáu-pán.