Hepatitis B virus surface Ag:PrThr:Pt:Bld^Donor:Ord:Neut
hepatitis b virus surface ag:prthr:pt:bld^donor:ord:neut
Hepatitis B virus surface Antigen:Presence or Threshold:To identify measures at a point in time:Whole blood^Donor:Ordinal:Virus Neutralization
hepatitis b virus surface antigen:presence or threshold:to identify measures at a point in time:whole blood^donor:ordinal:virus neutralization