Isakhelo sale sixhobo senziwe ngesinyithi. Imodeli yaso intle, kwayeiingenelo zomthamo omncinci, ubunzima obuphantsi, umthamo omkhulu, ingxolo ephantsi, ukusebenza kakuhle okuphezulu kunyenjalo njalo. Ingasetyenziswa kwizibhedlele nakwiilabhoratri zebhayoloji uhlalutyo lomgangatho wei-serum, i-urea kunye ne-plasma.