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.
The y-axis gives the psychosine value (nM) measured in each laboratory by their LC-MS/MS method. The x-axis gives the vendor stated psychosine values (nM) for each dried blood spot (DBS) calibrator: Filled circles/solid line (Nationwide), open circles/solid line (Mayo), filled triangles/dotted line (PerkinElmer), open squares/solid line (NY Wadsworth Center), plus signs/solid line (GelbChem LLC).
