Le khithi isetshenziselwa ukutholwa kwekhwalithi ye-Trichomonas vaginalis nucleic acid kumasampuli okukhishwa kwepheshana le-urogenital.
Ikhithi yokuthola i-vitamin D (igolide eli-colloidal) ifanele ukutholwa kwe-vitamin D egazini lomuntu, i-serum, i-plasma noma igazi le-peripheral, futhi ingasetshenziswa ukuhlola iziguli ngokuntula uvithamini D.