Table 2. Comparison of percent recoveries of 10plex analytes in undiluted (neat) serum and following two-fold dilution in sample diluent.

10-PlexAnalyte	Neat Serum	25 mM EDTA/0.05% Tween-20(1∶2 dilution)
IL-1β	12%	46%
IL-10	2%	117%
IL-6	16%	94%
GM-CSF	17%	72%
IL-5	22%	168%
IFNG-γ	34%	51%
TNF-α	15%	19%
IL-2	30%	63%
IL-4	22%	54%
IL-8	34%	107%

EDTA, ethylenediaminetetraacetic acid disodium salt.