Excessive hemolysis, gross contamination of specimen, chylous serum, improper storage of specimen, inappropriate specimen container, insufficient specimen volume.
5 mL blood (1 mL serum)
Specimen should be transported as soon as possible. When transportation is delayed, refrigerate.
No Hepatitis B core antibody detected
The presence of Hepatitis B core antibody may indicate acute Hepatitis B virus infection, recovery from Hepatitis B virus infection, chronic HBV hepatitis, or an HBV carrier state. Measurement of other hepatitis B antigens or antibodies (e.g., hepatitis B surface antigen or antibody; hepatitis B core IgM antibody) may help differentiate acute from chronic infection.