HBV Surface Antigen (HBsAg) Quantitative, Monitoring

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General Information

Lab Name
HBV Surface Antigen (HBsAg) Quantitative, Monitoring
Lab Code
HBSAGQ
Epic Name
HBV Surface Antigen (HBsAg) Quantitative, Monitoring
Description

For monitoring the progression of chronic hepatitis B and their response to antiviral therapy. This Quantitative detection of Hepatitis B virus Surface Antigen (HBSAg) in human sera incorporates the modified FDA approved ARCHITECT HBsAg test one-step chemiluminescent microparticle immunoassay (CMIA).

The performance characteristics of the test were determined by the University of Washington Department of Laboratory Medicine and Pathology. The modified version has not been cleared or approved by the US Food and Drug Administration.

Note: This test should only be ordered in individuals with chronic Hepatitis B, confirmed positive for HBV Surface Antigen (HBSAg).

For initial HBV diagnosis, see Hepatitis B Surface Antigen (HBsAg) with reflex to PCR for REACTIVE [HBSAG] or Hepatitis B Surface Antigen without PCR reflex for REACTIVE [HBSAGX].

Synonyms
HBSAG, HBV
Components
Code Name
HBSAQR HBV Surface Antigen Quantitative Result
HBSAQI HBV Surface Antigen Quantitative Interpretation

Interpretation

Guidelines
Method

Chemiluminescence Immunoassay

Reference Range
See individual components

Ordering & Collection

Specimen Type
Peripheral Blood
Collection

Preferred: 5 mL blood in GOLD SST tube

Also acceptable: 5 mL blood in ORANGE RST or RED TOP.

Quantity
Requested: 1.0 mL serum
Minimum: 0.5 mL serum

Processing

Receiving Instructions

GOLD SST tube: Specimens may be stored on or off the clot, red blood cells, or separator gel for up to 3 days at room temperature (15-30°C) or up to 7 days at 2-8°C. If testing will be delayed more than 3 days for specimens stored at room temperature or more than 7 days for specimens stored at 2-8°C, remove serum from the clot, red blood cells, or separator gel and store at -20°C or colder. Avoid more than three freeze/thaw cycles.

Unacceptable samples: Cord blood, neonatal specimens, cadaver specimens, heat-inactivated specimens, or body fluids such as saliva, urine, amniotic fluid, or pleural fluid. Specimens with obvious microbial contamination or that are grossly hemolyzed.

Misc Sendout

Performance

Lab Department
Central Lab Virology(RVIR)
Frequency
Performed twice a week.
Available STAT?
No
Performing Location(s)
CL Division of Infectious Disease Diagnostics (DIDD) - Virology

1601 Lind Ave SW
Renton, WA 98057

Phone: 206-685-6656 option 8
Hours of Operation:
Mon–Fri: 7:00 AM–7:00 PM
Sat: 9:00 AM–4:00 PM

Billing & Coding

CPT Codes
87467
Interfaced Order Code
UOW6628