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Hepatitis B Core Antibody, IgM
|In House Availability||Twice per week|
|Container type||Gold top|
|Amount to Collect||1 mL blood|
|Preferred volume||0.5 mL serum|
|Min. Volume||0.25 mL serum (this volume is insufficient for repeat testing if needed)|
|Processing notes||Refrigerate sample|
|Synonyms||HBcAb, IgM; HBV; HBV; anti-HBc; anti-HBcAg|
|Stability||Refrigerated 6 days|
|Turn around times||1-8 days|
|Additional information||The antibody found earliest in acute HBV infection, IgM will usually be present during the "window" period after HBsAg production has declined to undetectable levels, often before anti-HBs is measurable. It usually persists for up to 6 months, but may occasionally persist for as long as 24 months, or even remain at detectable levels if active virus replication is continuing with chronic hepatitis B infection.
Positive results are automatically forwarded to California public health per regulations. However, this does not absolve the ordering provider from any additional reporting if such is required.
|Last Updated||11/18/2013 11:21:55 AM|