Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Mitogen control results for QFT-IT following immediate and delayed incubations. The cutoff for indeterminate results (mitogen-nil tube value of <0.5 IU/ml) is marked with a dashed line. Values for the mitogen-nil tube greater than 10 IU/ml are shown as 10 IU/ml. The paired t test was used to compare differences in means.
