• Olink Target 48 Cytokine ( 45 ) https://www.olink.com/products-services/target/48-cytokine-panel/ SAMPLE TYPE Human EDTA, acid citrate dextrose, and sodium heparin plasma and serum are the recommended sample types. Variations observed between responses in heparin, citrate plasma and serum, as compared to EDTA plasma, were generally small and all assays should therefore function without limitation in these sample types. For other sample types, please inquire.