Objective    To evaluate the biological safety of a Ni-62.9Cr-23 alloy fabricated by laser solid forming technology.     Methods    According to the requirements of national standards GB/T16886-2003

YY/T0279-1995 and YY/T0244-1996

general cytotoxicity

acute systemic toxicity

hemolysis testing

oral mucous membrane irritation testing were used to evaluate the alloy.     Results    The alloy was indicated having no cytotoxicity and with a hemolytic rate of 0.385%. The oral mucous membrane irritation testing showed that the alloy had no mucous membrane irritation. The acute systemic toxicity test indicated that the alloy had no acute systemic toxicity.     Conclusion    The Ni-62.9Cr-23 alloy has good biological safety in a certain extent.