Thymopeptide and transfer factor are two common clinic biological preparations, which are used to cure immunodeficiency, low immunofunction or infectious disease caused by virus or fungi owing to their functions of increasing body immunity. In order to discuss the relationship between trace elements and those related diseases, to coordinate sound clinic use of the preparations and to provide productive data on them, atomic absorption spectrophotometry was used to detect the contents of Zn, Cu, Fe, Mn, Co and Ni in thymopeptide and transfer factor biological preparations. Respective contents of detected elements were compared in a statistical way. Results show that Zn and Co contents in thymopeptide were lower than in transfer factor; the contents of Cu, Fe, Mn and Ni, in thymopeptide were higher than in transfer factor. For Zn, Cu, Mn and Co, there was a significant difference between the two biologicam preparations (P<0.01). For Fe and Ni there was a great difference (Q<0.05). The results can provide useful data for sound clinic biological injection to promote immune function, and for increasing or decreasing certain trace elements in preparation.
