viral markers การใช้

• What are viral markers and how is this test conducted?
• If it is suspected that hepititis is the cause of jaundice I believe doctors use'viral markers'for heptititis A, B and C to try and ascertain whether or not this is the case.
• Included in the complaints, the FDA said, was failure to follow instructions for viral marker testing of blood; failure to maintain controls to assure adequate expiration dating of blood products; failure to maintain and calibrate equipment; failure to assure proper employee training; inadequate procedures to prevent distribution of unsuitable products, and failure to maintain accurate and complete records of the manufacturing process.