... the plasma by centrifugation. 3. Carefully withdraw the plasma for testing or label and store it at 2-8° C for ... the serum by centrifugation. 4. Carefully withdraw the serum for testing or label and store it at 2-8° C for ... ,FSH,HIV,HBSAG,HCV,HBV,HEV,SYPLILIS,TB,HP,NGH,Chlamydia,Malaria,PSA,CEA,FOB,Dengue,Troponin I,Toxoplasma ,Drug of ...