The early diagnosis of biomarker is crucial for patient survival and successful prognosis of the disease, and for this reason sensitive and specific methods are required for early cancer diagnosis. However, common techniques for separation and concentrating biomarker are not optimal from the viewpoints of sensitivity and selectivity because analyzing these biomarkers from a small amount of serum is difficult due to the complexity of the sample and low levels of these biomarkers. Peptide imprinted polymers were developed for detection of progastrin releasing peptide (ProGRP); a low abundant...