Abstract: The present invention provides a regenerated cellulose membrane (RCM) that is useful in analysis of a sample for the presence of or the amount of a target molecule present in the sample. The invention also provides a method for producing and using the same. The RCM of the invention has a plurality of RCM functional groups on its surface in which a linker is covalently attached. The linker has a distal end and a proximal end, where the proximal end comprises at least one RCM linking functional group such that the RCM linking functional group is attached to the RCM functional group. The distal end of the linker comprises a receptor linking functional group that is used to covalently attach a receptor molecule. The receptor molecule is adapted for binding to a target molecule of interest when the target molecule is present in the sample. The RCM of the invention can be used for quantitative and/or qualitative analysis of a target molecule within the sample.