This Singleplex bead kit comprises the analyte specific components for the measurement of human B-DNF (Brain-Derived Neurotrophic Factor) in cerebrospinal fluid (CSF), tissue culture medium, and serum. The assay may be run alone or in combination with other Human Singleplex Bead Kits from Invitrogen. For neuroscience applications (sample types include CSF and tissue culture medium containing markers such as Aβ and tau), buffer reagents needed to complete the assay are available under Catalog number LNB0001 (Invitrogen’s Neuroscience Buffer Reagent Kit). When working with serum and other tissue culture medium samples, buffer reagents needed to complete the assay are available under Catalog number LMB0002 (Invitrogen’s Growth Factor Buffer Reagent Kit). These reagents are intended for use in the Luminex® 100™ or 200™ System only.