Fig. 3.
Threshold determination for the HPLC screening method. The black dot corresponds to 1.0 % cut-off value: the resulting sensitivity and specificity are respectively 0.98 and 0.89.
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.