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hbsag
what is the reason that sometimes the PCR for hbvdna is zero and the hbsag is positive by ELISA and is the explanation from lab perspective thank you.
hbvdna undetactable means ultra low replication. due to low replication liver damage likely low or nil.
If your hbsag is positive, your hbvdna is not "zero". It's likely, "UND" meaning undetected by the current lab assay.
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