... minutes Take sample any time HCG Pregnancy Urine Rapid Test INTRODUCTION HCG is a glycoprotein hormone secreted ... by centrifugation. 3. Carefully withdraw the plasma for testing or label and store it at 2-8° ... by centrifugation. 4. Carefully withdraw the serum for testing or label and store it at 2-8° ... with a new one.More rapid diagnostic products available including hCG,LH,FSH,HIV,HBSAG,HCV,HBV,HEV, ...