The CRP test is used to determine the concentration of C-reactive protein in the blood. For this test, blood samples are taken through techniques like nephelometry and turbidimetry. CRP is made by hepatocytes in the liver.  The production of this protein increases manifold during inflammatory diseases, bacterial viral and infections and heart diseases too. There are two types of CRP assay:- A wide range of investigations are done in case of acute infections and inflammatory diseases. A High Sensitive CRP Assay, also known as hs-crp or Cardio-CRP, for cardiovascular diseases.