The Environmental Protection Agency (EPA) is announcing a presolicitation for a sole source procurement of the V-PLEX Custom Human Biomarkers 1 kit, which includes 25 plates featuring proinflammatory markers such as Human IL-1ß, Human IL-6, Human TNF-a, along with the V-PLEX Human IL-8 kit. This specialized laboratory equipment is crucial for conducting analytical tests related to human biomarkers, which play a significant role in environmental health assessments and research. Interested vendors should direct inquiries to Kevin Broadnax at Broadnax.Kevin@epa.gov or call 850-934-9350 for further details regarding this opportunity.