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Test Code HBSQAB Hepatitis B Surface Antibody, LAB3480

Performing Laboratory

St. Luke's Hospital Cedar Rapids

Specimen Requirements

Container/Tube:

Preferred: Gold-top serum gel tube or plain, red-top tube

Acceptable: Green-top (lithium heparin or sodium heparin) tube or lavender-top (EDTA) tube 

Specimen Volume: 250 uL of serum or plasma

Stability: Specimen must be centrifuged within 24 hours.  Serum or plasma may be stored up to 7 days at 2-8C. Freeze samples, devoid of red blood cells, at or below -20°C for longer storage.  Thoroughly mix thawed samples and centrifuge at 10,000 g for 2 minutes before using.  Samples may be subjected to 4 freeze/thaw cycles.

Collection Instructions:

Note:  Individuals that have received blood component therapies, e.g. whole blood, plasma, immunoglobulin administered during the previous 3–6 months may have a false reactive anti-HBs result due to passive transfer of anti-HBs.

Reference Values

≥10 mIU/mL is indicative of Immunity to HBV

Useful For

The presence of antibody to hepatitis B surface antigen (anti-HBs) is used to determine immune status to HBV or disease progression in individuals infected with HBV.

Day(s) Test Set Up

Monday through Friday (Day shift only)

Methodology

Chemiluminesence

Test Classification and CPT Coding

86706